Answer:
x = 0.8 Mi
Step-by-step explanation:
for x = 4224 ft we can use the factor (1 Mi/5280 ft)
then
x = 4224 ft (1 Mi/5280 ft) = 0.8 Mi
10,000,000,000,000,000,000,000,000,000,000,000,000,000,000
10,000,000,000,000,000,000 x 1,000,000,000,000,000,000,000,000 =