Why is 8.8 classified as a rational number

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!

Describe the domain and range of y=2(3)^x-2+5

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?