find the value of r.

Question

all tubes of watercolor paint at an art supply store have the same price. an artist has a coupon for $.50 off each tooth pain she buys. by six tubes of paint and pays a total of $84.30 after the coupon is applied. right in solving equation to find r, the regular price of each to paint.

Answer 1

6r - 6(.50) = 84.30

6 times r is the regular price and 6 times .50 is the amount they took off to arrive at a total of 84.30.