Can someone please explain how to solve this question?

Tamera puts 15/4 gallons of gasoline in her car. which mixed number represents the gallons of gasoline? a) 2 3/4 gallons b) 3 1/4 gallons c) 3 3/4 gallons d) 4 1/2 gallons answer it's worth a lot of points!

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Complete the conditional statement. if a + 2 < b + 3, then a < b b < a a – b < 1 a < b + 1