Exponential Functions

The table gives the coordinates of four points on the graph of which exponential function?

• y = 6(-2)^x

• y = -6(2)^x

• y = -2(6)^x

• y = -2(3)^x

The table contains some points on the graph of an exponential function. Which function represents the table?

• y = (0.25)^x

• y = 0.0625(4)^x

• y = 256(0.25)^x

• y = 0.5(4)^x

An exponential function is modeled by the table below. What is the y-intercept of the function? (When x = 0)

• 480

• 240

• 1920

• 120

There were 417 cell phones sold at a store in January. Since then, sales have increased 3.75% per month. At this rate, which function would be used to represent the monthly cell phone sales after m months?

• y = 417(0.0375)^m

• y = 417(1 + 0.0375)^m

• y = 417(3.75)^m

• y = 417(1 - 0.0375)^m

Based on the graph, which statement about the function is true?

• The range is the set of all real numbers less than 0.

• The range is the set of all real numbers greater than 0

• The domain is the set of all real numbers greater than -4

• The domain is the set of all real numbers less than -4

Which dashed line is an asymptote for the graph?

• line q

• line r

• line s

• line t

The table shows the population of mice in a field at the end of m months. Based on the data what will be the population of mice at the end of 8 months?

• 192

• 3,072

• 1,536

• 256

A student used f(x) = 5.00(1.012)^x to show how the balance in a savings account will increase over time. What does the 5.00 represent?

• The interest the savings account earned for the first year

• The annual interest rate of the savings account

• The number of years the savings account has earned interest

• The starting balance of the savings account

The starting annual salary for an office worker at a company is $29,000. If the company awards an annual increase of %6.2, which graph models this situation after the office worker receives x annual increases?

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