A furniture store pays $750 for a sofa. They mark up the price by 17% to get the retail price. What is the retail price of the sofa? Start by setting up the double number line with the original price that the furniture store pays. Dollars 750 0% 100 % Great job! Which point shows the unknown amount, or the retail price, on the double number line? Dollars x 750 y 0% 100% x y Nice! Write an expression to show how to find a 17% markup on $750. Dollars 750 y 0% 100% 17% of $750 + 100% of $750 Nice! Rewrite the expression to find the percent of the whole cost that the retail price would be. Dollars 750 y 0% 100% ? 100% of $750 + 17% of $750 = % of $750