Carolina goes to a paintball field that charges an entrance fee of $18 and $0.08 per ball. The field has a promotion that says, "Get $10 off if you spend $75 or more!" Carolina wonders how many paintballs she needs to buy along with the entrance fee to get the promotion.

Question

Let B represent the number of paintballs that Carolina buys.
1) Which inequality describes this scenario?

Answer 1

The inequality that describes this scenario is:

18 + 0.08B ≥ 75 - 10

Simplifying:

18 + 0.08B ≥ 65

Therefore, the inequality is:

0.08B ≥ 47

B ≥ 588

So, Carolina needs to buy at least 588 paintballs to spend $75 or more and get the $10 off promotion.