If someone could answer both of these you so much < 3

First question: If 3cm=500 miles then 750 miles would be 4.5 cm.

#3: The second drink would be better to buy because with the 8oz drink it is 32 cents per ounce and the 16oz drink is 30.5 cents per once. 

If there are four friends then each would get, 1.25 or 1 1/4. so this is how i solved 5 ÷ 4 = 1.25 . hope this ; )