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Question 1 (4 points) According to the National Association of Realtors, the mean sale price for existing homes in the United States in 2011 was...

Question 1

 (4 points)

 

According to the National Association of Realtors, the mean sale price for existing homes in the United States in 2011 was $214,300. Assume that sale prices are normally distributed with a standard deviation of $41,000. Find the percentage of existing homes in 2011 that sold for more than $214,300?

Question 1 options:


16%


0.15%


50.0%


99.7%

SaveQuestion 2

 (4 points)

 

The time required to distribute a batch of political flyers in a neighborhood varies inversely as the number of people who help pass out these flyers. This means that as the number of people who help increases, the time required to pass out the fliers will _____________.

Question 2 options:


The relationship cannot be determined from the information given.


decrease


increase

SaveQuestion 3

 (4 points)

 

Waipio Rd in Honokaa, Hawaii, is one of the steepest roads in the world. It rises 450 ft over a horizontal distance of 1000 ft. What is the percentage grade of this hill? Round to the nearest tenth of a percent.

Question 3 options:


4.5%


40%


45%


450%

SaveQuestion 4

 (4 points)

 

Brady Street hill is a hill on the course of the Bix 7, a 7-mile race that is held each July in Davenport, Iowa, in conjunction with the Bix Beiderbecke Memorial Jazz Festival. Over a horizontal distance of 2006 feet, the elevation rises 120 feet. What is the percentage grade of this hill? Round to the nearest tenth of a percent.

Question 4 options:


6.0% grade


6.7% grade


5.7% grade


6.3% grade

SaveQuestion 5

 (4 points)

 

The number of hours h required for a block of ice to melt varies inversely with the temperature t. When it is 60 degrees, it takes 2 hours to melt a block of ice. Determine an equation that relates the number of hours required to melt the block of ice to the temperature.

Question 5 options:


h = 120t


t = 120h


h = t/120


h = 120/t

SaveQuestion 6

 (4 points)

 

According to the National Association of Realtors, the mean sale price for existing homes in the United States in 2011 was $214,300. Assume that sale prices are normally distributed with a standard deviation of $41,000. Find the percentage of existing homes in 2011 that sold for more than $296,300?

Question 6 options:


0.15%


2.5%


99.85%


97.5%

SaveQuestion 7

 (4 points)

 

The time required to distribute a batch of political flyers in a neighborhood varies inversely as the number of people who help pass out these flyers. It will take 9 hours for 4 workers to distribute a batch of flyers. equation relating the time required to distribute flyers to the number of people who help pass out these flyers.

Question 7 options:


t = 36p


t = 36/p


p = 36t


t = p/36

SaveQuestion 8

 (4 points)

 

According to the National Association of Realtors, the mean sale price for existing homes in the United States in 2011 was $214,300. Assume that sale prices are normally distributed with a standard deviation of $41,000. Find the percentage of existing homes in 2011 that sold for less than $296,300?

Question 8 options:


2.5%


0.15%


99.85%


97.5%

SaveQuestion 9

 (4 points)

 

According to the National Association of Realtors, the mean sale price for existing homes in the United States in 2011 was $214,300. Assume that sale prices are normally distributed with a standard deviation of $41,000. Find the percentage of existing homes in 2011 that sold for less than $214,300?

Question 9 options:


50.0%


99.7%


16%


0.15%

SaveQuestion 10

 (4 points)

 

The mean salary of public school teachers in the United States in 2012 was $50,547 with a standard deviation of $9000. Assume these salaries are normally distributed. Find the percentage of public school teachers who earn less than $32,547?

Question 10 options:


68%


95%


2.5%


13.5%

SaveQuestion 11

 (4 points)

 

Mike is putting up a snow fence on the west side of his property. He needs a post at each end to hold the fence up and would like to put a post in every 8 feet. If he uses 25 posts for his fence, how wide is the west side of his property?

Question 11 options:


204 ft


192 ft


199 ft


185 ft

SaveQuestion 12

 (4 points)

 

Fernando is going to redo his kitchen and wants to put in wood laminate flooring. His kitchen is rectangular and measures 3 yards by 5 yards. The laminate tiles he is looking at measure 1/2 ft by 1 ft. How many tiles would Fernando need to buy to redo his kitchen floor?

Question 12 options:


270


30


540


135

SaveQuestion 13

 (4 points)

 

In January of 2012, your family moved to a tropical climate. For the year that followed, you recorded the number of rainy days that occurred each month: 14, 14, 10, 12, 11, 13, 11, 11, 14, 10, 13, 8

Quantity A: the mean

Quantity B: the higher mode

Question 13 options:


The relationship cannot be determined from the information given.


Quantity B is greater.


Quantity A is greater.


The two quantities are equal.

SaveQuestion 14

 (4 points)

 

The following table consists of responses to the question "What is your favorite kind of music?" in a survey consisting of 260 randomly selected people.Type of MusicNumber of PeopleClassic Rock73Alternative/Indie Rock48Jazz31Classical28Rap/Hip-hop80

Use the above table to estimate the probability that a randomly selected American's favorite music is not Alternative/Indie Rock.

Question 14 options:


0.119


0.185


0.881


0.815

SaveQuestion 15

 (4 points)

 


Quantity A: So far, Keisha has burned 571.7 calories. She wants to burn a total of 600 calories. How many more calories must Keisha burn? 

Quantity B: 25 calories

Question 15 options:


The two quantities are equal.


Quantity B is greater.


Quantity A is greater.


The relationship cannot be determined from the information given.

SaveQuestion 16

 (4 points)

 


Quantity A: 6/13 — 3/13

Quantity B: 3/15 — 1/15

Question 16 options:


Quantity A is greater.


The two quantities are equal.


Quantity B is greater.


The relationship cannot be determined from the information given.

SaveQuestion 17

 (4 points)

 

A student is living on a budget of $1500 per month. He is spending 25% of his budget on rent, 20% on food, 15% on bills, and 30% on fun. Represent this information in a pie chart. Calculate the dollar amount the student spent on rent.

Question 17 options:


$150


$375


$300


$450

SaveQuestion 18

 (4 points)

 

Katrice opens savings account and makes regular deposits each month. The table shows her account balance each month for 3 months. If this pattern were to continue, what would Katrice's balance be after 12 months? Katrice's BalanceStart$200After 1 month$250After 2 months$300After 3 months$350

Question 18 options:


$850


$750


$800


$700

SaveQuestion 19

 (4 points)

 

Mountain climbers use a general rule of thumb which estimates that the temperature will drop 3.5 degrees Fahrenheit for every 1000 ft of elevation. Complete the table.Elevation (in thousands of ft)Temperature (in degrees Fahrenheit)4735 6 

Restate your equation in the form of a sentence: "If x represents ..., then y represents ..."

Question 19 options:


If x represents the temperature in degrees Fahrenheit, then y represents the elevation in thousands of ft.


If x represents the elevation in hundreds of ft, then y represents the temperature in degrees Fahrenheit.


If x represents the elevation in thousands of ft, then y represents the temperature in degrees Fahrenheit.


If x represents the temperature in degrees Fahrenheit, then y represents the elevation in hundreds of ft.

SaveQuestion 20

 (4 points)

 

In order to make 4 dozen chocolate chip cookies, I need 1 ½ cups of sugar. Complete the table.Cups of sugarDozen cookies0 1 ½ 3 4 ½ 6 

How many cookies can you make with 3 cups sugar?

Question 20 options:


8 dozen


16 dozen


4 dozen


12 dozen

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