Solve the equation.ex + e-x = 7
A. 1.9657, -1.9657
B. 1.9248, -1.9248
C. 1.9194, -1.6962
D. 1.5194, -2.3303
Answer: B
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Find the amplitude and range of the function.y = 2 cos x
A. 
; [-2, 2]
B. 2; [-2, 2]
C. ?; [-2, 2]
D. -2; [-2, 2]
Use the vectors in the figure below to graph the following vector. 
u + z 
A. 
B. 
C. 
D. 
Solve the problem.For the following table of data, a.Draw a scatterplot.b.Calculate the correlation coefficient.c.Calculate the least squares line and graph it on the scatterplot.d.Predict the y-value when x is 16.
?
A. a.
b. -0.965
c. Y = -0.45x + 5.53
d. -1.67
B. a.
b. 0.965
c. Y = 0.45x - 5.53
d. 1.67
C. a.
b. -0.965
c. Y = -0.45x - 5.53
d. -12.73
D. a.
b. 0.965
c. Y = -0.45x + 5.53
d. -1.67
Solve the problem.The rate of growth of a microbe population is given by 
where x is time in days. What is the growth after 1 day?
A. 55.42 B. 62.52 C. 110.84 D. 62.92