7: no because each foot is 12 in. and if you add 12+12+12 it equals 36+4 equals 40 in. but you have to be 42 inches to ride
8: Alicia's mother is taller because when you convert to 1.72 meters into centimeters you get 172 and 175 is bigger than 172
9: he bought 64 ounces
10: Cheddar Cheese is heavier because 1 pound is equal to 16 ounces and cheddar cheese is 30 ounces so that would be 1 pound and 15 ounces and it says that the Parmesan cheese is 1 pound and 10 ounces... Therefore, the Cheddar Cheese is heavier