CCSS.Math.Content.HSA.REI.B.4

Factor completely: x²+16x+64

• (x+4)(x+16)
• (x-8)(x-8)
• (x+2)(x+32)
• (x+8)(x+8)

Tags

CCSS.Math.Content.HSA.REI.B.4

A brick falls from the top of a building.  The equation h=-16t² - 21t + 200 represents the height of the brick h in feet after t seconds.  How long will it take the brick to reach the ground? Round your answer to the nearest tenth as needed.)

• 2.8
• 2.9
• 3.0
• 0 

Tags

CCSS.Math.Content.HSA.REI.B.4

Which of the following quadratic equations can be solved with the graph shown? 

• x² - x - 6 = 0
• x² - x + 6 = 0
• x² + x - 6 = 0
• x² + x + 6 = 0

Tags

CCSS.Math.Content.HSA.REI.B.4

Factor completely.

x² - 4x - 32

• ( x + 8 ) ( x - 4 )

• ( x - 8 ) ( x - 4 )

• ( x - 8 ) ( x + 4 )

• ( x + 8 ) ( x + 4 )

Tags

CCSS.Math.Content.HSA.REI.B.4

2d² = 8

• 4
• -2
• -4, 4
• -2, 2

Tags

CCSS.Math.Content.HSA.REI.B.4

3x²+12= 39 (solve using square roots)

• x = √27

• x = ±3√27

• x = ±3

• x = ±9

Tags

CCSS.Math.Content.HSA.REI.B.4

You and some friends went to a haunted house on Halloween. The mummy scared one friend so much that she jumped into the air! The equation h = -4t² + 2t models her jump where h is her jump's height in feet t seconds after the mummy scares her. When did she reach her maximum height?

• 0.1 seconds

• 0.25 seconds

• 0.50 seconds

• 1 second

• 2 seconds

Tags

CCSS.Math.Content.HSA.REI.B.4

What is the solution set for  $3x^2+9=5-4x$  ?

•  $\left\{-2\pm2i\sqrt{2}\right\}$  

•  $\left\{-2\pm2\sqrt{2}\right\}$  

•  $\left\{\frac{-2\pm2i\sqrt{2}}{3}\right\}$  

•  $\left\{\frac{-2\pm2\sqrt{2}}{3}\right\}$  

Tags

CCSS.Math.Content.HSA.REI.B.4

The axis of symmetry is a line that goes through the...

• y-intercept

• any random point

• vertex

• x-axis or y-axis

Tags

CCSS.Math.Content.HSA.REI.B.4

If there is one solution, the discriminant is . . .

• zero

• a postive number

• a negative number

• a perfect square

Tags

CCSS.Math.Content.HSA.REI.B.4