Using Exponential Functions — Quiz

Question 1

Determine which of the following graphs represent the equation. Also determine the y -intercept of the graph. y is equal to 5 times open paren 2 to the x th power close paren

Revolt · Accepted Answer

Image with description A coordinate plane has an x-axis ranging from negative 5 to 5 in increments of 1. The y-axis ranges from negative 5 to 5 in increments of 1. The graph increases as x values move from left to right and the graph passes through the points (negative 4 comma 0 point 3 1), (negative 3 comma 0 point 6 2 5), (negative 2 comma 1 point 2 5), (negative 1 comma 2 point 5), and (0 comma 5). The y-intercept of the graph is 5. y -intercept is equal to 5

Question 2

A guest on a talk show tends to receive many phone calls right after she is on the show, and then the calls become less frequent. This can be represented by the equation y is equal to 30 times 0 point 9 2 to the d th power , where y is the number of phone calls after d days. How many phone calls should she expect after a week?

Revolt · Accepted Answer

17

Question 3

Given the table, determine if the data represents a linear or an exponential function and find a possible formula for the function. x 0 1 2 3 4 f of x 14 12 point 6 11 point 3 4 10 point 2 0 6 9 point 1 8 5

Revolt · Accepted Answer

Exponential; y is equal to 14 times 0 point 9 0 to the x th power

Question 4

What is the y -intercept of the graph of y is equal to 2 point 5 to the x th power ?

Revolt · Accepted Answer

1

Question 5

Given the table, determine if the data represents a linear or an exponential function and find a possible formula for the function. x 0 1 2 3 4 f of x 0 2 4 6 8

Revolt · Accepted Answer

Linear; y is equal to 2 x

Using Exponential Functions — Quiz Answers

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