Practice Test Answers

Which graph represents an even function?

The cost of producing x soccer balls in thousands of dollars is represented by h of x is equal to 5 x plus 6 The revenue is represented by k times x is equal to 9 x minus 2 Which expression represents the profit, open paren k minus h close paren times x , of producing soccer balls?

For which pair of functions is open paren f circ g close paren times x is equal to 12 x ?

If f of x is equal to x squared minus 25 and g of x is equal to x minus 5 , what is the domain of open paren f over g close paren of x ?

If f of x is equal to 3 x squared and g of x is equal to 4 x cubed plus 1 , what is the degree of open paren f circ g close paren times x ?

Which equation represents a linear function?

The width of a photograph is 4 inches. Tori measures its width using the two rulers, both of which measure in inches. Open image in full-screen view Which statement is true about the accuracy and precision of the rulers?

Lionel computed the average rate of change in the depth of a pool over a two-week interval to be zero. Which statement must be true?

The height in feet, h , of a model rocket t seconds after launch is given by the equation h of t is equal to 3 plus 70 t minus 16 t squared The average rate of change in h of t between t is equal to 1 second and t is equal to 3 second is 6 What does the average rate of change tell you about the rocket?

A boat has a speed of 15 mph in calm water. It takes the boat 3 hours to travel upstream but only 2 hours to travel the same distance downstream. Which equation can be used to find c , the speed of the current in miles per hour?

Which description could be written as a linear function?

Which statement best describes how to determine whether f of x is equal to x squared minus x plus 8 is an even function?

The length of a rectangle is 6 inches longer than its width. The perimeter of the rectangle is 28 inches. If x represents the width of the rectangle in inches, which equation can be used to find its value?

Which function is the inverse of f of x is equal to negative 5 x minus 4 ?

If the function f of x is equal to m x plus b has an inverse function, which statement must be true?

The scatterplot shows the number of minutes spent reading, x , and the number of pages read, y , by each of seven students last night. Use the labeled points to create a linear model that predicts the number of pages that a typical student reads in x minutes. Which equation represents this linear model?

Whose measurements are the most accurate?

The scatterplot shows the number of minutes Tyler played in his last eight basketball games and the points he scored in each game. Estimate the location of the line of best fit. About how many points would Tyler score if he played for 40 minutes?