Question

Janie has \$3$3dollar sign, 3. She earns \$1.20$1.20dollar sign, 1, point, 20 for each chore she does and can do fractions of chores. She wants to earn enough money to buy a CD for \$13.50$13.50dollar sign, 13, point, 50.

Write an inequality to determine the number of chores, ccc, Janie could do to have enough money to buy the CD.

Answer 1

Inequality:

3+1.20c ≥ 13.5

solution = c ≥ 8.75

On the graph, have the dot closed and have it going from the point between 8.5 and 9 going to the right.

| ------------•---------- | -------------------- | ------------------> |

8.5 9 9.5 10

Answer 2

9

Explanation:

13.50 - 3 = 10.50

1.20×8 = 9.60 = not enough

1.20×9= 10.80 = more than enough

She has to do 9 chores to have enough money including the 3 dollar she already has