Saxon Algebra Test 17B Review

A pine cone falls from the top of a 90-foot pine tree. The equation  $90-h\ =\ 16t^2$  can be used to find the height h of the pine cone after falling for t seconds. Estimate the height of the pine cone after falling 2 seconds.

• 0

• 26

• 13

• 39

• 88

Determine whether the side lengths below form a Pythagorean triple.

9, 16, 25

• Yes

• No

Tags

CCSS.8.G.B.8

 $\sqrt{2}\left(4\ +\ \sqrt{6}\right)$  

•  $4\sqrt{2}+\ 2\sqrt{3}$  

•  $\sqrt{8}+\sqrt{12}$  

•  $2\sqrt{2}+2\sqrt{3}$  

•  $\sqrt{20}$  

•  $2\sqrt{5}$  

Tags

CCSS.HSN.RN.A.2

 $\left(3y+2\right)\left(y^2-2y+4\right)$  

•  $\left(3y+2\right)\left(y-2\right)\left(y+2\right)$  

•  $3y^3-6y^2+12y+2y^2-4y+8$  

•  $3y^3-4y^2+8y+8$  

•  $\left(3y+2\right)\left(y+2\right)^2$  

•  $8y^8$  

Tags

CCSS.HSA.APR.A.1

 $\sqrt{49x^3y^2}$  

• 7xy

•  $7xy\sqrt{x}$  

•  $7xy\sqrt{7x^2y}$  

•  $7x^{1.5}y$  

•  $7\sqrt{x^3y^2}$  

Tell whether the set of ordered pairs below represent a direct variation. If they do, what is the constant of variation. (-2, -8), (3, 12), (-4, -16)

• Yes

• No

• 4

• -4

• (-1, 4)

Are the following lines parallel?

 $y=\frac{1}{4}x+3$  

 $4x-2y=12$  

• Yes

• No

Tags

CCSS.8.EE.B.6

 $Factor:\ -4x^3+4x^2+24x$  

•  $x\left(-4x^2+4x+24\right)$  

•  $-4x\left(x^2-x-6\right)$  

•  $-4x\left(x-3\right)\left(x+2\right)$  

•  $-4x\left(x-3\right)\left(x-2\right)$  

•  $-2x\left(2x^2-2x-12\right)$  

 $x^2+xy-2y^2$  Factor:

•  $\left(x-y\right)\left(x+2y\right)$  

•  $\left(x+y\right)\left(x-2y\right)$  

•  $\left(x^2+2\right)\left(y^2-1\right)$  

•  $x^2+xy-2y^2$  

•  $\left(x-y\right)\left(x-2y\right)$  

 $-23x-36+3x^2$  

•  $\left(3x+6\right)\left(x-6\right)$  

•  $\left(3x+4\right)\left(x-9\right)$  

•  $3x^2-23x-36$  

•  $\left(3x-6\right)\left(x+6\right)$  

•  $\left(3x-3\right)\left(x+12\right)$