Which expression represents the height of the gateway arch in St. Louis if it is 75 feet taller than the Washington Monument which is represented by W?
Height of Washington Monument = W ft
the height of the gateway arch is 75 feet taller than the Washington Monument .
Height of gateway arch
H = (W+75) ft
convert each fraction to the least common multiple of 20, so 3/4 = 15/20 & 1/10 = 2/20, then divide 15 by 2 and you get a little over 7, so the food will last 7 weeks.