Solve. Use the discount equation S = R − rR, where S is the sale price, R is the regular price, and r is the discount rate.

An exercise bike is on sale for $320, having been marked down 20% off the regular price. Find the regular price.

Mr and mrs smith buy tickets for themselves and their four children. the cost of an adult ticket is ? 6 more than the adult ticket. the total cost of the six tickets is ? 40.50 work out the cost of an adult ticket. in your working let c be the cost of the child ticket and a be the cost of the adult ticket.

Which three lengths could be the lengths of the sides of a triangle? 21 cm, 7 cm, 7 cm 9 cm, 15 cm, 22 cm 13 cm, 5 cm, 18 cm 8 cm, 23 cm, 11 cm

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