I would suggest asking your teacher for help that seems like a lot... :(
Food is any substance consumed to provide nutritional support for an organism.
1 quart = 4 cups
7 quarts = 28 cups
1 guest needs 2 cups
12 guests need 24 cups
She has 28 and needs 24, yes there is enough
The experimental probability would be 33 out of 60 or 55%
He drove 178 miles in the afternoon. 248-70=178