If your born on 1900 how old would have you been on 2009?

For the equations below which statement is true ?

What are the first 4 terms in the multiplication pattern given by the formula 2×4n

Suzanne began a trip with 18 1/2 gallons of gas in the gas tank of her car if she hughes 17 3/4 gallons on the trip how many gallons does she have left once she finish the trip