Equations and Inequalities

Solve the equation:
3g = 228     

• g = 76

• g = 231

• g = 225

• g = 684

Solve the equation:
3x + 2 = 20

• x = 2

• x = 7

• x = 9

• x = 6

Solve:
3x ≥ 27

• x ≥ 9

• x > 9 

• x ≤ 9 

• x < 9

An plumber charges $40 for each hour he works plus a $90 service charge. The total charge for a recent job was $330. Which equation could be used to determine the number of hours, h, that the plumber worked on the job? How many hours did he work?

• 330h + 40 = 90; 2 hours

• 40h + 90 = 330; 6 hours

• 40h + 330 = 90; 12 hours

• 90h + 40 = 330; 5 hours

Ms. Gallegos burns 236 calories riding her bike each hour. She wants to burn more than 590 calories while riding her bike at the same rate. Which inequality represents all possible values for t, the number of hours Ms. Gallegos must ride her bike to burn more than 590 calories?

• t > 2.5

• t < 2.5

• t > 0.4

• t < 0.4

Solve the inequality.

• > 4

• > 2

• > 6

• < 6

Solve the inequality.

Jaxon must sell at least 49 rolls of wrapping paper to support the robotics club fundraiser. He has already sold 24 rolls of wrapping paper. Which inequality best represents the number of rolls of wrapping paper Jaxon still needs to sell?

• x + 24 > 49

• x + 24 ≤ 49

• x + 24 < 49

• x + 24 ≥ 49

Does the given value make the inequality true?  x + 9 > 21, when x = 15

• True

• Not True

Which property of equations is shown: 4x + 15 = 15 + 4x

• Distributive

• Associative

• Commutative

• Identity