Review of Equations and Inequalities

Wendy is making lemonade. As shown below, Wendy mixes water and lemon juice. Which equation shows how much lemon juice is needed for 6 ounces fo water?

• j = 6/3

• 6j = 3

• j = 6(2)

• 6 = j/2

Paul graphed the equation y = x. Which point does the graph NOT pass through

• (0, 0)

• (6, 6)

• (9, 9)

• (12, 14)

Is x = 12 a solution of x + 15 = 4

• YES

• NO

Oliver had $43. On his birthday, he received $25. Write an equation to find how much money Oliver has now. Use b as the variable.

Mathematical Equivalence

ON

Greta cut a ribbon into 12 pieces. Each piece was 6 inches long. Use the model below to write an equation to find the length of the ribbon she started with. Use a as the variable.

Mathematical Equivalence

ON

Tamera has a TOTAL of 12 pencils. There are 3 red pencils and a other pencils. Write and equation to represent this situation.

Mathematical Equivalence

ON

The table show how much Eric earns. Write an equation that relates a, the number of hours worked to b, his pay.

Mathematical Equivalence

ON

x ÷ 13 = 8

• x = 91

• x = 104

• x = 21

• x = 5

Simplify the expression:
7(n-3)

• 7n + 21

• 7n - 21

• 7n - 7

• n - 21

Ashley finds masking tape in packages of 4 rolls for $4.32. What is the cost of one roll in  the package?

• 4x = 4.32

• 4.32x = 4

• 4(4.324) = x

• 4/ 4.32 = x