Question

I need to know the answer

Answer 1

Add up the all the dollar or subtraction and then get your answer use pemdas this will help you with all the answer.

Answer 2

`18+0.08B\geq 75`

Explanation:

there is a flat fee of $18

there is an incremental fee of $0.08 per ball which can be shown as
`0.08B`

so the amount that Carolina will spend would be
`18+0.08B`

the promotion only applies if Carolina spends $75 or more. the greater than or equal to symbol is
`\geq`

so the inequality would be
`18+0.08B\geq 75`

however, we could simplify this to
`0.08B\geq 57` but it is not necessary