3-r/8=-9/2 How do you solve this?

Sandy works at a clothing store. she makes $7 per hour plus earns 15% commission on her sales. she worked 75 hours over the last two weeks and had a total of $2,566 in sales before taxes. which of the following is closest to how much she will earn in hourly wages and commission for those two weeks?

Factor the expression using the gcf. the expression 21m−49n factored using the gcf

Solve the formula ax+ by = c for x.