Math 2 Unit 5 review

Find the vertex of the following function using the method of your choice.

f(x) = x²+6x+8

• (0,5)

• (-3,1)

• (-1,2)

• (-3.6)

Solve for x using the method of your choice.

x²-2x-15

• x = 5, x = -3

• x = -3 , x = -5

• x = 15, x = 1

• x = 7, x = -8

 $\sqrt{-64}$  Simplify 

• 8 $\sqrt{-1}$  

• -8i

• 8i

• 64

 $\sqrt{80}$  

Simplify 

• 16 $\sqrt{4}$  

• 8

• 5 $\sqrt{4}$  

• 4 $\sqrt{5}$  

• 10ft

• 80 ft

• 2 ft

• 50ft

The length of a rectangle is two more than its width. If the area of the rectangle is 63 find the length and width.

• 7 and 9

• 5 and 8

• 63 and 1

• 12 and 5

Jason jumped off a cliff into the ocean in Acapulco while vacationing with some friends. His height as a function of time could be modeled by the function

h(t) = -16t2 + 16t + 480 , where t is the time in seconds and h is the height in feet. After how many second did Jason hit the water?

• 7 seconds

• 2 seconds

• 4 seconds

• 6 seconds

What is the equation of this graph in factored form?

• (x+9)(x+2)

• (x-9)(x-2)

• (x-5)(x+1)

• (x+5)(x-1)

Write the equation of the graph in vertex form.

• (8,4)

  (1,2)

• (0,-3)

  (4,5)

• (0,3)

  (5,4)

• (7,8)

  (-3,5)