Suppose yogurt is on sale for $0.50 a piece, and you have a coupon for $0.30 off your total purchase. Write a function rule for the coast of n yogurts. How much would 20 yogurts cost?
I would be option A. You need to multiply the number of yogurts, n, by the price, $0.50, and then subtract. You replace n with 20 and do the math. You get $10 but you take off the $0.30.
