Alg. 2 Semester Final Review (5 & 6)

Find the 5th root of - 32

• Right 3

• Left 3

• Reflection over x axis

• Down 4

• Subtract 9 from each side

• Subtract 5 from each side

• Square each side to eliminate the radical

• Divide each side by 4

Evaluate f(x)=-2x+13   for f(10)

• -7
• 1
• -8
• 7

Given
f(x) = 3x² + 7x and g(x) = 2x² - x - 1, find (f + g)(x).

• 11x² - 1
• 5x⁴ + 6x² - 1
• 5x² + 6x - 1
• 5x² + 8x - 1

What does it mean to find the inverse of a function?

• the x's and y's are switched
• the x's and y's are divided by 2
• the x's and y's are made negative
• the x's and y's are the same

Find the inverse of f(x) = -4x - 12

• f^-1(x) = 4x - 3
• f^-1(x) = -1/4x - 3
• f^-1(x) = 1/4x + 3
• f^-1(x) = -4x - 3

Evaluate log₄64=x

• x=4

• x=3

• x=1

• x=2

Answer explanation

4^(log₄64)=4^(x)

64=4^x