Unit 2 MC HW Review

• 
• 
• 
• 

The table above gives values for the functions f and g at selected values of x.  Functions f and g are defined for all real numbers.  Let h(x)=g(f(x)).  What is the value of h(5)?

• 3

• -2

• -4

• 6

• 
• 
• 
• 

In the years from 1900-2020, the US Population for people aged 65 and over has been increasing. An exponential regression was used to develop a model for the population. The figure above shows a graph of the residuals of the exponential regression. Which of the following statements about the exponential regression is true?

• The residual plot has no apparent pattern, so the exponential model was not appropriate.

• The residual plot has no apparent pattern, so the exponential model was appropriate.

• The residual plot displays a pattern, so the exponential model was not appropriate.

• The residual plot displays a pattern, so the exponential model was appropriate.

Let k, w, and z, be constants. Which of the following is equivalent to the expression?

• 
• 
• 
• 

The graph of a piecewise-linear function f is shown in the figure. Let g be the inverse function of f. What is the value of g(11)?

• 13

• 5

• -3

• -9