Unit 5 Review

Looking at the equation 3x + 5 = 14 tells me that I can perform which step first...

• Subtract 5 from both sides of the equals sign

• Add x to both sides of the equals sign

• Add 3x to both sides of the equals sign

• Subtract 1 from both sides of the equals sign

Choose all of the following options that are possible first steps when solving

2(10 + 12x) = 3 + 9x

• Subtract 3 from both sides of the equation

• Distribute the 2 inside the parentheses to 12x

• Subtract 9x from the right side only

• Distribute the 2 inside the parentheses to 10

• Divide by 9 on both sides

Simplify: 2x+3+9x+2

• 16x

• 11x+5

• 5x+11

• 16+x

7 + 3(x- 4)

• 3x - 5

• 10x -40

• 10x - 12

• 3x - 28

Distribute and simplify the following expression.

-3(2 - 4w) + (-11w)

• -6 + 12w + 11w

• w - 6

• -6 + -w

• -6 + 12w - 11w

Sandy is upgrading her Internet service. Fast Internet charges $60 for installation and $50.45 per month. Quick Internet has free installation but charges $57.95 per month.

The equation that represents this scenario is 60 + 50.45x = 57.95x

• True.

• False.

Sally bought three candy bars for a total of $18.00. How much did each candy bar cost? Write an equation to solve this problem. Use c as your variable.

• 18c=6

• c + 6= 18

• c +18 = 6

• 3c=18

Mary earns $14 per hour. Which equation represents how many hours she worked to earn $112? 

• 14h = 112

• 14 / h = 112

• h + 14 = 112

• h - 14 = 112

Write an expression.

The sum of 89 z and 67

• 89 z / 67

• 89 z + 67

• 89 z - 67

• 89 z x 67