Unit 6 Review- Geometric Sequences & Exponential Functions

Which graph shows an exponential function?

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Which of the following is an exponential function?

• y = 3(2^x)

• y = 3x + 2

• y = 3x²

What is the y-intercept of the function?

• 2
• 3
• 1
• -2

Write the equation of the graph.

• f(x) = 5^x + 2

• f(x) = 3^x - 2

• f(x) = 3^x + 2

• f(x) = -3^x +2

Identify the y-intercept (initial value) of the function f(x)=2(4)^x.

• 2
• 4
• (2)^x
• 8

What is the initial value of the situation represented by f(x)=0.05(2)^x?

• 0.05

• 2

• 0.1

• 1

Which equation matches the graph?

• y = 2^x+3
• y = 2^x + 3
• y = 2^x
• y = 2^-x

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• The coordinates of the x-intercept are (0.25 , 0).

• The coordinates of the y-intercept are (0, 8).

• The equation of the asymptote is x = 0.

• The graph includes the point (2, 1).

Use the function, N = 14,000(.96)^t. Where N is the number of employees and t is the number of years.
How many employees will there be after 3 years?

• 14,000 employees
• 12,386 employees
• 40,360 employees
• 15,748 employees