Algebra I Review Part A --Ch 1-5

Write and equation and solve

Fotry-two more than a number is 78.

• x + 42 = 78; x = 36

• 42x = 78; x = 36

• 42 - x = 78; x = -36

• x - 42 = 78; x = 120

Tags

CCSS.6.EE.B.7

Solve $18\ =\ m\ -\ 4$  

• m = -14

• m = 14

• m = 22

• m = -22

Tags

CCSS.6.EE.B.7

Solve $8x\ -\ 4\ =\ 28$  

• x = -4

• x = 24

• x = 3

• x = 4

Tags

CCSS.7.EE.B.4A

Solve $-0.97\ +\ 0.7n\ =\ 0.1\left(2.8\ +\ 2n\right)$  

• 2.5

• -2.5

• 0.7

• -0.7

Tags

CCSS.8.EE.C.7B

Solve. Round your answer to the nearest tenth. $5.6n\ -6.4\ =\ 29.92$  

• 4.2

• -4.2

• 6.5

• -6.5

Tags

CCSS.7.EE.B.4A

Find the sum $-13\ +\ 21\ +\ \left(-2\right)$  

• -6

• 6

• 10

• -20

Tags

CCSS.7.NS.A.1C

Solve $x^2\ -\ 1\ =\ 80$  

• 81

• 40.5

• 79

• 9

Tags

CCSS.8.EE.A.2

Solve $-2\left(2+2x\right)\ -\ 3x\ =\ -4\ -\ 7x$  

• no solution

• 0

• infinitely many solutions

• 1

Tags

CCSS.8.EE.C.7B

6n - 2 = -38

• -6

• 6

• 6.7

• -42

Tags

CCSS.7.EE.B.4A

Change the following fraction to a decimal: $\frac{8}{9}$  

•  $0\overline{.9}$  

•  $0\overline{.8}$  

• 0.888889

• 0.8

Tags

CCSS.7.NS.A.2D

CCSS.8.NS.A.1