A.ced.1, A.ced.3, REI 1 Quiz Review

A. Describe the solution set: (show calculations)

2(x + 5) = 2x + 5

• one solution

• no solution

• infinitely many solutions

• two solutions

Tags

CCSS.8.EE.C.7A

B. Solve for m: (show calculations)

10m + 6n = 12

• $m=\frac{6}{5}-\frac{3n}{5}$

• $m=6-3n$

• $m=5$

• $m=\frac{3n}{5}$

Tags

CCSS.HSA.CED.A.4

What is the final step to solving the following equation:

4y + 2 + 5y = 38

• Subtract 2 from both sides

• Divide by 9 on both sides

• Combine Like Terms

• Add 2 to both side

Tags

CCSS.7.EE.B.4A

C. Solve for x: (show calculations)

• x = yb - v

• x = by - v

• x = by + v

Tags

CCSS.HSA.CED.A.4

What would be the "reason" for statement #2? *
6 points

• Symmetric Property

• Addition Property of Equality

• Subtraction Property of Equality

• Substitution Property (Combine Like Terms)

Tags

CCSS.HSA.REI.A.1

D. Solving the formula P = 2l + 2w for w is NOT equivalent to which equation? (show calculations)

•  $\frac{P-2l}{2}=w$  

  
  

•  $\frac{P}{2}-\frac{2l}{2}=w$  

•  $\frac{1}{2}P-l=w$  

•  $P-\frac{1}{2}l=w$  

E. Solve the equation for y. (show calculations)

2x + 3y = 4

• $y=\frac{4-2x}{3}$

• $y=\frac{2x-4}{3}$

• $x=\frac{4-3y}{2}$

• $y=-\frac{4-2x}{3}$

Tags

CCSS.6.EE.C.9

• Multiplication Property of Equality
• Addition Property of Equality
• Additive Identity
• Multiplicative Inverse

Tags

CCSS.HSA.REI.A.1

Fill in the missing reasoning for the argument shown

5(4 - 3r) = -2r - 32 (given)

20 - 15r = -2r - 32 (distribute)

20 - 13r = -32 (addition)

-13r =-52 (???)

r = 4 (divide)

• addition

• subtraction

• multiplication

• division

Which step did Bob make a mistake on?

-107 < 1 - 6(-3p + 3) (step 1)

-107 < 1 + 18p + 18 (step 2)

-107 < 18p + 19 (step 3)

-126 < 18p (step 4)

7 < p (step 5)

• Step 2

• Step 3

• Step 4

• Step 5