Each U.S. penny weighs 2.5 grams. How many pennies, x, are on a scale if their total weight is
37.5 grams?
Identify an equation that models the problem and find its solution.
Emily brought $35 to the fair. At the fair, she spent $16 on ride tickets and she also bought
lunch. She had $7 when she left the fair. How much did Emily spend on lunch?
