At a grocery store, the price of a watermelon is determined by how many pounds the watermelon weighs. The price of a watermelon
that weighs 7.3 pounds is $4.38. Write an equation that is used to determine the price, p, in dollars, of any watermelon based on the number of pounds, w, the watermelon weighs.
Explanation: First, we must determine the price per pound of watermelon. To do this, we take the cost of the watermelons, and divide it by the number of pounds. 4.38 / 7.3, which is .6. This tells us each pound costs 60 cents, or $.6. We’re trying to say “The total price of watermelon would be the amount of watermelon bought times .6.” Plug in the variables you’re given, and you get p = w * 6.
