Algebra Review

Solve:
2(2x + 3) = -6(x + 9)

• 1.2
• 6
• -6
• 7.5

Solve:
3(x - 2) = 18

• 6.7
• 4
• 8
• -4

Tags

CCSS.7.EE.B.4A

Solve for p

4(p - 2) = 2(p + 5)

• 1

• 6

• 8

• 9

Tags

CCSS.HSA-REI.B.4B

Solve for x

-130 = -5(4x + 2)

• 7

• 6

• -6

• -7

Tags

CCSS.8.EE.C.7B

Solve for b

-108 = -b - 8(1 + 3b)

• -5

• 4

• -4

• 5

What is the first step to solve this equation?
3x + 6 = 10 + 3x + 4x 

• Add 4x to both sides of the equation

• Combine like terms 3x and 4x on the same side of the equation

• Add 3x and 6 to get 9x

• Add 6 and 10 to get 16

8v - 4(v + 8) = 8

• 2
• 10
• 4
• -4 

Tags

CCSS.8.EE.C.7B

Find the error in the problem below
19 - 2k = 3k - 1
     +3k   +3k
19 + 1k = -1
-19           -19
k = -20

• They should have divided by 1 for the last step
• They should add 19 instead of subtracting 19
• I can not find an error
• Instead of adding 3k they should subtract 3k

Tags

CCSS.HSA.REI.A.1

Find the Error
What error did the student make when solving the equation:
5x + 6 =  66
5x - 6 = 66 -6
5x = 60
5*5x= 60*5
x = 300

• The student subtracted 6 from both sides instead of adding
• Student multiplied by 5 instead of dividing by 5
• Student got the wrong answer when subtracting 66-6
• The student did not correctly eliminate the variable from one side of the equation

Tags

CCSS.HSA.REI.A.1

Factor the following trinomial:

 $x^2-10x+24$  

•  $\left(x+6\right)\left(x-4\right)$  

•  $\left(x-6\right)\left(x+4\right)$  

•  $\left(x-6\right)\left(x-4\right)$  

•  $\left(x+6\right)\left(x+4\right)$