Equations & Inequalities

Which of the listed equations is NOT true?

• A. b + 4 = 7 when b = 3

• B. x - 6 = 13 when x = 7

• C. 3x = 15 when x = 5

• D. d ÷ 7 = 2 when d = 14

Which of the following statements is false?

• A. a - 2 = 5 when a = 7

• B. y + 8 = 10 when y = 3

• C. 4z = 20 when z = 5

• D. c ÷ 5 = 3 when c = 15

Gift's Galore's earnings were $8,329 more than that of Griffin's Web. What is the addition equation to find Griffin's Web's earnings?

• A. x - 8,329 = 57,532

• B. x + 8,329 = 57,532

• C. x + 8,329 = 43,757

• D. x + 8,000 = 57,532

Ramos went to a pizza shop and spent one-third of his money on lunch. If Ramos had $6 left after lunch, how much money did he have originally?

• $18

• $15

• $12

• $9

In a game, Jordan has 42 marbles. This is 15 more marbles than Sam. Select the correct addition equation & solution to find the number of Sam's marbles.

• s + 15 = 42 s = 27 Sam has 27 marbles.

• s - 15 = 42 s = 57 Sam has 57 marbles.

• s + 15 = 42 s = 30 Sam has 30 marbles.

• s + 15 = 42 s = 15 Sam has 15 marbles.

Find the value of x in the equation x + 5 = 12

• x = 17

• x = 7

• x = 8

• x = 6

Find the value of x if x - 7 = 12

• x = 5

• x = 19

• x = -5

• x = 10

Which number(s) from the set {4, 6, 8, 10, 12} satisfy the inequality 20 ≤ 25 - h?

• 4, 6, 8 and 10

• 6, 8 and 10

• 8 and 10

• 4

When Sarah stands on a stool she is 7 feet tall. If the stool is 2 feet tall, which equation would represent how you would solve the problem to find Sarah's height?

• h - 7 = 2

• 7 - h = 2

• 2 + 7 = h

• h + 7 = 2

Mrs. Flanders is preparing a fruit salad for herself, her husband, and their four dogs. If each person's serving contains 150 calories, how many calories are in the entire fruit salad?

• 750 calories

• 900 calories

• 600 calories

• 1,050 calories