Unit 8 Retake Assignment

Is this exponential growth or decay?

• Growth
• Decay

The inverse function of an exponential function is known as a...?

• quadratic function
• square root function
• absolute value function
• logarithmic function

Tags

CCSS.HSF-BF.B.4A

Rewrite the equation in exponential form:
log₉(1/81) = -2

• ln(-2) = 1/81
• -2^(1/81) = 9
• 9^-2 = 1/81
• 9^(1/81) = -2

Tags

CCSS.HSF.BF.B.5

Solve:
log₅(7x) = 2

• x = 5/7
• x = 25/7
• x = 2/7
• x = 17.5

Tags

CCSS.HSF.BF.B.5

Which is the inverse for the function?
f(x) = 2^2x-3

• f^-1(x) = log₂(x) − 6
• f^-1(x) = log₂(x) + 6
• f^-1(x)=½log₂(x) + 3/2
• f^-1(x)=½ln(x)+3/2

Find the inverse of y=5^x-8

• y=log₅(x-8)
• y=log₅(x+8)
• y=log₈(x-5)
• y=log₈(x+5)

What is the domain?

• (-∞, ∞)
• (0, ∞)
• [1, ∞)
• (1, ∞)

Compare f(x) = 3^x- 4 with the basic function g(x) = 3^x

• 4 units up
• 4 units to the left
• 4 units to the right
• 4 units down

Write the equation of the function f(x)=log(x+5)-6 after the following transformations:

Translate 3 units left and 2 units up.

• f(x)=log(x+2)+2

• f(x)=log(x+2)-4

• f(x)=log(x+8)-4

• f(x)=log(x+8)+2

What is the y-intercept of the function?

• 2
• 3
• 1
• -2