Unit 2 Review

The graph of the exponential function is shown on the grid. Which dashed line is an asymptote for the graph?

• Line a

• Line b

• Line c

• Line d

• y = 0
• y = 1

• x = 0

• y = 320

The dollar value of a car, c(x) , is a function of the age of the car, x.  The function c is graphed below. If the value of the car was $37,500 when it was purchased and the value is decreasing at a rate of 15% per year, what is the y-intercept for the graph of y = c(x)?

(a)  

• $37,500
• $31,875

• $28,000

• $40,000

The initial value of a stock is $30. The value of the stock increases at a rate of 18% each year. What graph best models this situation?

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Use the graph and identify the y-intercept. The y-intercept of the exponential function is (a)   .

• (0,70)
• (70,0)
• (0,0)
• (0,30)

Researchers studied the population of a town over time and modeled the data using an exponential function.

The initial estimated population was 14,000 people.

After the first year, the population of the town was 15,150.

Which function represents the population of the town after x years?

This year the average price of an NBA game ticket was $120. Each year the price increases by 6%. Which function can be used to model the average price of an NBA game ticket after x years?

The table below represents some points on the graph of an exponential function. Which function represents the same relationship?

Based on this information, which function best models the number of Airpods Pro units sold (in millions) x years since 2014?