Question

Daphne is putting pencils into boxes at the museum store. Each box holds 5 pencils. Daphne has already filled 7 boxes. Write an inequality that shows how many more pencils she will need in order to fill at least 15 boxes.

a. 5x + 35-15
b. 5x - 35 -15
c. 5x + 35- 15
d. 5x - 35 - 15

Answer 1

To find out how many more pencils Daphne will need to fill at least 15 boxes, we can use the inequality: 5x ≥ 40.

Step-by-step explanation:

To find out how many more pencils Daphne will need to fill at least 15 boxes, we can use an inequality. Let x represent the number of additional boxes she needs to fill.

Since each box holds 5 pencils, the total number of pencils she needs will be 5 multiplied by the total number of boxes she needs to fill.

So, the inequality will be: 5x ≥ (15 - 7)×5. Simplifying, we get: 5x ≥ 8×5.

And further simplifying, we get: 5x ≥ 40. This inequality indicates that Daphne will need at least 40 more pencils to fill at least 15 boxes.