The measuring cup holds only 1/4 while you need 3/4 so you fill it 3 times to fill the cup but remember you have 4 more cups to fill so you multiply 3 and 5 to get 15!!
You multiply 3 because it takes 3 measuring cups to fill a bottle and there’s 5 cups in all
B. “Y = 15x” would be your answer. Y is your end balance and x is the weeks. For example, if x is 3 weeks, your equation would be 45 = 15*3. In this case, y would be 45. Need anymore help?