Algebra Practice Final Semester 2

Find the perimeter of a rectangle with a length of  $5x-6$  and a width of  $3x^2$  DRAW IT 

•  $6x^2+10x-12$  

•  $6x^4+10x^2-12$  

•  $6x^2+10x$  

•  $6x^2+10x+12$  

Add or Subtract to Simplify:

(x² +5x- 4) - (- x² +4x+ 6)

• 2x² + x + 2

• x + 2

• 2x² + x - 10

• x - 10

What is the Area?

• 2x² - 3x - 18 inches²
• 2x² + 3x + 18 inches²
• 2x² + 9x - 18 inches²
• 2x² - 9x - 18 inches²

Factor:x² - 16

• ( x + 4 ) ( x - 4 )

• ( x - 12 ) ( x - 4 )

• ( x + 8) ( x + 2)

• Prime

What is the vertex of the equation

 $y=-2\left(x-3\right)^2+5$  Does it have a minimum or maximum?

• (-3, 5),  maximum

• (3, 5), maximum

• (-3, 5), minimum

• (3, 5), minimum

Which equation best describes the graph?

• y = 2^x + 4

• y = 1/2^x - 4

• y = 2^x - 4

• y = 1/2^x + 4

Graph the quadratic.

• A

• B

• C

• D

The following parabola represents Erika kicking a ball in the air. Which is NOT true?

• The ball started at zero feet

• The maximum height of the ball was 4 feet, after 2 seconds

• The ball was in the air for 4 seconds

• None of the above (all are true)

The height of an object thrown into the air can be modeled by the formula  $y=-16x^2+70x+95$  
 , where y is in feet after x seconds.
What is the initial height of the object?

• 70 feet

• 95 feet

• 149 feet

• -16 feet

 $h=-16t^2+64t+960$  

A ball is thrown into the air with an upward velocity of 64 ft/s. Its height, h, after t seconds is given by the function above.
When did the ball hit the ground?

• 10 seconds

• 2 seconds

• 5 seconds

• 7 seconds