Here is some record keeping from a coffee shop about their paper cup

What is the smallest integer n such that n\sqrt{2} is greater than 20

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!

Find the cosine function that is represented in the graph.