Algebra 2 Chapter 8 Test Review

Use the functions

f(x)=3x−4, g(x)=x+1, and h(x)=2x²-x -3.

Write the function rule.

(f+g)(x)=

• 2x + 3

• 9x - 11

• 2x² + 7x - 4

• 4x - 3

Use the functions

f(x)=3x−4, g(x)=x+1, and h(x)=2x²-x -3.

Write the function rule.

(h-g)(x)=

• 2x² - 2x - 4

• -x² - 5x +2

• x² + 5x - 2

• 2x² + 5x - 3

Use the functions

f(x)=3x−4, g(x)=x+1, and h(x)=2x²-x -3.

Write the function rule.

(fg)(x)=

• 4x - 3

• 3x² - 12

• 3x² - 5x - 3

• 3x² -x - 4

Use the functions

f(x)=3x−4, g(x)=x+1, and h(x)=2x²-x -3.

Write the function rule.

(f ⁄ g)(x)=

• (3x - 4) / (x + 1), x ≠ -1

• x² + 6x / 3x - 4, x ≠ 4/3

• (3x - 4) (x + 1)/ 2x² - x - 3

• (3x - 4) / (x + 1), x ≠ 1

Use the functions

f(x)=3x−4, g(x)=x+1, and h(x)=2x²-x -3.

Write the function rule.

(f ⁄ g)(x)=

• (3x - 4) / (x + 1), x ≠ -1

• x² + 6x / 3x - 4, x ≠ 4/3

• (3x - 4) (x + 1)/ 2x² - x - 3

• (3x - 4) / (x + 1), x ≠ 1

Use the functions

f(x)=3x−4, g(x)=x+1, and h(x)=2x²-x -3.

Write the function rule.

(f°h)(x)=

• 3x² - 9

• 6x² - 3x - 13

• 3x² - 5x - 12

• 3x - 13

Calculate the account balance using the compound interest formula. Round to the nearest cent.

$2,500 compounded quarterly at 4% APR for 10 years

• $3103.37

• $2457.22

• $3722.16

• $2115.73

Calculate the account balance using the compound interest formula. Round to the nearest cent.

$4000 compounded monthly at 4.2% APR for 20 years

• $8301.24

• $9521.89

• $10225.47

• $12538.74

f(x)=3x−4, g(x)=x+1, and h(x)=2x²-x -3.

Write a function rule representing (f∘g)(x).

• (fg)(x) = 3x-1

• (fg)(x) = 3x² - 5

• (fg)(x) = -3x²+5x - 4

• (fg)(x) = 4x - 3

Use y=1150(1.03)^x.

What is the initial amount?

• 1.03

• x

• 1150

• 0.3