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

Solve
4m² - 100 = 0

• m=25, -25
• m=96
• m=5, -5
• m=-96

Tags

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

Find the vertex of 
f(x) = -x² - 4x + 12.

• (-2, 16)
• (2, 0)
• (2, 4)
• (-2, 4)

Tags

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

Solve Using the quadratic formula

• A
• B
• C
• D

Tags

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

Find the vertex of 
f(x) = -x² - 4x + 12.

• (-2, 16)
• (-2, 14)
• (2, 4)
• (-2, 4)

Tags

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

Pedro throws a ball upward at a rate of 20 meters per second from an initial height of 4 meters. The height of the ball above the ground can be approximated by the equation below, where t represents the amount of time in seconds since the ball has been released. 
h= -5t²+20t+4
After how many seconds does the ball reach its maximum height?

• 0 seconds
• 4 seconds 
• 22 seconds
• 2 seconds

Tags

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

Solve using square roots.
5b² - 4 = 41

• b = 9, b = -9
• b = 3, b = -3
• b = 8, b = -8
• no solution

Tags

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

Complete the square for
x² + 12x + ____

• x² + 12x + 144
• x² + 12x + 36
• x² + 12x - 36
• x² + +12x - 144

Tags

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

If you square 5 more than a positive number, the result is 88 more than 12 times the number.  Find the numbers.

• -9, 7
• √75
• 9, -7
• 15, -5

Tags

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

Find the roots by factoring.

12x = 9x² + 4

• (2/3, 0)

• (2/3, 4)

• (3, 0)

Tags

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

The height, y, of a ball tossed into the air can be represented by the equation

y = −x² + 10x + 3, where x is the elapsed time. What is the equation of the axis of symmetry of this parabola?

• y = 5

• y = -5

• x = 5

• x = -5

Tags

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