Week 3 Review

What equation represents the quadratic function?

• y = (x - 4)² + 1

• y = (x + 1)² - 4

• y = (x - 4)² - 1

• y = (x - 1)² - 4 

What is the equation of this graph?

• f(x) = (x + 2)² - 3

• f(x) = (x - 2)² - 3

• f(x) = |x + 2| - 3

• f(x) = |x - 2| - 3

What is the equation of this graph?

• f(x) = (x + 2)² - 2

• f(x) = (x - 2)² - 2

• f(x) = |x + 2| - 2

• f(x) = |x - 2| - 2

When f(x) = 4x+8 and
g(x) = x+3, find
f(x) * g(x). 

• 4x²+24

• 4x²+20x+24

• 4x²+12x+24

• 4x²+4x+24

f(n)=2n+1
g(n)=3n
Find f(n)+g(n)

• 5n+1

• -5n+1

• -2n+1

• -6n-1

f(n)=x²+1
g(n)=2x-5
Find f(n)-g(n)

• x²-2x+6

• -x²+2x+4

• -x²-2x-6

• x²-2x-4

h(x) = 3x + 3

g(x) = -4x + 1

Find (h + g)(10)

hint: add h(x) and g(x), then plug in 10

• -6

• 6

• 82

• -72

g(x) = 2x - 5

h(x) = 4x + 5

Find (g - h)(3)

hint: subtract g(x) and h(x), then plug in 3

• 18

• 16

• -16

• 28

When f(x) = 2x and g(x) = x²+3 , find f(g(x)).
What is the domain?

• x²+2x+3

• 4x²+3

• 2x²+3

• 2x²+6

g(x)=3x+4
h(x)=3x-1
Find g(h(x))

• -9x+11

• 4x²+4x

• 9x+1

• 9x+11