In this statement, 'A recipe for 1 pizza crust calls for 3/8 tablespoon of salt.', it is stating that for each pizza there would be 3/8 tablespoon of salt needed to make 1 pizza crust. For 3 pizza crusts, take the unit rate which is 3/8 tablespoons per salt and multiply it by 3 to get how much salt you need to make 3 pizza crusts. For the answer, you would get 9/8. To simplify, it would be 1 1/8.
