Graded Exam #2.pdf - Graded Exam#2 Started on Sunday 3:36...

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Unformatted text preview: 12/31/2017 Graded Exam #2 Started on Sunday, December 31, 2017, 3:36 AM State Finished Completed on Sunday, December 31, 2017, 5:00 AM Time taken 1 hour 24 mins Grade 87.50 out of 125.00 (70%) Question 1 Solve the rational equation. Correct 6.25 points out of 6.25 = - Flag question Select one: a. {5, 1} b. {-5, -1} c. {-8, 8} d. {5} The correct answer is: {5, Question 2 1} Solve for the indicated variable. Incorrect 0.00 points out of 6.25 Flag question Q= DP for D Select one: a. D = b. D = c. D = d. D = The correct answer is: D = 1/9 12/31/2017 Graded Exam #2 Question 3 Solve the problem. Correct A train ride is $2.85 per ride. A commuter can purchase an unlimited-ride card for $45 per month. How many rides are required for a commuter to save money by buying the card? 6.25 points out of 6.25 Flag question Select one: a. 20 rides b. 18 rides c. 16 rides d. 22 rides The correct answer is: 16 rides Question 4 Solve the problem. Correct The plans for a rectangular deck call for the width to be 4 feet less than the length. Sam wants the deck to have an overall perimeter of 52 feet. What should the length of the deck be? 6.25 points out of 6.25 Flag question Select one: a. 4 feet b. 19 feet c. 15 feet d. 28 feet The correct answer is: 15 Question 5 Correct 6.25 points out of 6.25 Flag question feet Solve the problem. A consultant traveled 255 miles to attend a meeting, traveling hours for the first part of the trip, then increasing to a speed of for the second part. If the entire trip took 5hours, how far did the consultant travel at the faster speed? Select one: a. 127.5 mi b. 135 mi c. 180 mi d. 120 mi 2/9 12/31/2017 Graded Exam #2 The correct answer is: 120 Question 6 Incorrect mi Solve the problem. 0.00 points out of 6.25 The property tax on a $160,000.00 house is $2,400.00. At this rate, what is the property tax on a house that is $280,000.00? Flag question Select one: a. $4,200.00 b. $5,040.00 c. $4,620.00 d. $3,780.00 The correct answer is: $4,200.00 Question 7 Simplify the expression in terms of i: Correct 6.25 points out of 6.25 Flag question Select one: a. 7i b. 49i c. -7i d. i The correct answer is: 7i Question 8 Simplify and write the result in standard form, a + bi. Correct 6.25 points out of 6.25 Flag question Select one: a. 7 +i b. 7 - 2i 3/9 12/31/2017 Graded Exam #2 c. 7 -i d. 7 + 2i The correct answer is: 7 Question 9 -i Simplify the expression. Correct 6.25 points out of 6.25 Flag question Select one: a. - b. - c. i d. The correct answer is: i Question 10 Solve for the indicated variable. Correct 6.25 points out of 6.25 Flag question at2 + uy = h for t Select one: a. t = b. t =± c. t = or t = 4/9 12/31/2017 Graded Exam #2 d. t =± The correct answer is: t =± Question 11 Find the value of n so that the expression is a perfect square trinomial and Correct 6.25 points out of 6.25 Flag question then factor the trinomial. Find the value of n so that the expression is a perfect square trinomial and then factor the trinomial. t2 - t+n Select one: a. n = ; 2 b. n = ; 2 c. n = ; d. n = 2 2 ; The correct answer is: n = ; 2 Question 12 Solve the quadratic equation by completing the square and applying the Incorrect square root property. 0.00 points out of 6.25 -5v2 = 5 + 7v Flag question Select one: a. 5/9 12/31/2017 Graded Exam #2 b. c. d. The correct answer is: Question 13 Solve the problem. Correct 6.25 points out of 6.25 Flag question The sum of an integer and its square is 30. Find the integers. Select one: a. 5 and -6 b. -6 and 36 c. 25 and 36 d. 5 and 25 The correct answer is: 5 and -6 Question 14 Solve the problem. Incorrect 0.00 points out of 6.25 Flag question The gas mileage for a certain vehicle can be approximated by where x is the speed of the vehicle in mph. Determine the speed(s) at which the car gets 9 mpg. Round to the nearest mph. Select one: a. 27 mph and 43 mph b. 23 mph and 47 mph c. 35 mph d. 19 mph and 51 mph The correct answer is: 27 mph and 43 mph 6/9 12/31/2017 Graded Exam #2 Question 15 Solve the equation. Correct 6.25 points out of 6.25 Flag question 5- = Select one: a. {12, -18} b. {6, -18} c. {6, -9} d. {12, -9} The correct answer is: {6, -9} Question 16 Make an appropriate substitution and solve the equation. Correct 6.25 points out of 6.25 - + +1=0 Flag question Select one: a. b. {3 + c. {-3 + ,3- } , -3 - } d. The correct answer is: {-3 + , -3 - } Question 17 Solve the equation. Correct 6.25 points out of 6.25 Flag question 9 + 24u-2 = 58u-1 Select one: a. 7/9 12/31/2017 Graded Exam #2 b. c. d. The correct answer is: Question 18 Write an absolute value inequality equivalent to the expression. Correct 6.25 points out of 6.25 Flag question "All real numbers whose distance from 13 is at most 5" Select one: a. >5 b. ≤5 c. <5 d. ≤ 13 The correct answer is: ≤5 Question 19 Solve the compound inequality. Write the answer in interval notation. Incorrect 0.00 points out of 6.25 Flag question 23 < 3x or -8 + 2x ≤ -15 Select one: a. b. (-∞, ∞) c. d. 8/9 12/31/2017 Graded Exam #2 The correct answer is: Question 20 Solve the absolute value inequality. Write the solution in interval notation. Incorrect 0.00 points out of 6.25 Flag question 24 ≤ 2 + Select one: a. {-22, 22} b. c. { } d. The correct answer is: 9/9 ...
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