Question 1 of 20
Find the x-intercepts. State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each intercept.
f(x) = -2x4 + 4x3
A. x = 1, x = 0; f(x) touches the x-axis at 1 and 0
B. x = -1, x = 3; f(x) crosses the x-axis

Question 1 of 40
Write the following equation in its equivalent logarithmic form.
2-4 = 1/16
A. Log4 1/16 = 64
B. Log2 1/24 = -4
C. Log2 1/16 = -4
D. Log4 1/16 = 54
Question 2 of 40
Solve the following exponential equation by expressing each side as a pow

Part 1 of 1 - Lesson 2 Questions
Question 1 of 20
100.0/ 100.0 Points
5.0/ 5.0 Points
Write an equation in general form of the line passing through (3, -5) whose slope is the negative reciprocal (the reciprocal with the
opposite sign) of 1/4.
A. 5x + y -

Question 1 of 20
5.0/ 5.0 Points
The following are defined using recursion formulas. Write the first four terms of each sequence.
a1 = 4 and an = 2an-1 + 3 for n 2
A. 4, 15, 35, 453
B. 4, 11, 15, 13
C. 4, 11, 25, 53
D. 3, 19, 22, 53
Question 2 of 20
5.0/

Question 1 of 40
Solve the following system of equations using matrices. Use Gaussian elimination with back substitution or Gauss-Jordan elimination.
x+y+z=4
x-y-z=0
x-y+z=2
A. cfw_(3, 1, 0)
B. cfw_(2, 1, 1)
C. cfw_(4, 2, 1)
D. cfw_(2, 1, 0)
Question 2 of

Part 1 of 1 - Lesson 1 Questions
Question 1 of 20
75.0/ 100.0 Points
5.0/ 5.0 Points
The y coordinate of a point where a graph crosses the y axis is called a/an:
A. 1st quadrant.
B. X axis.
C. Y intercept.
D. X intercept.
Question 2 of 20
5.0/ 5.0 Points

Amber Lopez
AC1507840
MA240.2.1 College Algebra
Assignment #04
March 30, 2016
Calculating a runners pulse using the definition of logarithm
The question for me to answer was: the function P (t) = 145e-0.092t models a runners
pulse, P (t), in beats per min

Amber Lopez
AC1507840
MA240.2.1 College Algebra
Assignment #08
April 6, 2016
Estimating College Tuition using a Bar Graph, and Formula
Part A
Given the bar graph in the example, I was able to push the estimates out from 20072010. The extended bar graph is