Exponential Functions

Which of the following is an exponential function?

• y = x²

• f(x) = 3x³

• y = x³

• f(x) = 3^x

What is the initial value in y=4(2)^x

• 4

• 2

• x

What is the y-intercept in y=4(2)^x

• (4,0)

• (0,2)

• x

• (0,4)

• (4,2)

What is the common ratio for the function f(x) = 25 (4)^x

• 25

• 4

b⁰ =

• -1

• 0

• 1

Simplify the expression.
x³x⁶

• x⁹
• x³
• x¹⁸
• x³⁶

Simplify the expression.
(xy)⁷

• x⁷y⁷
• xy⁷
• xy¹⁴
• x⁷/y⁷

Simplify the expression.
(4ab)²

• 4a²b²
• 8a²b²
• 16a²b²
• 4ab²

(5³x²y⁴)⁰

• 5xy
• 1
• 0
• 5

Is the equation linear, exponential or neither?

• Linear
• Exponential
• Neither