Arecipe for sweet potato pie calls for 3/4 cup of milk. martina has 6 cups of milk. how many sweet potato pies can she make with that amount of milk?

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.