Which graph represents the function r(x) = [x – 21 - 1

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!

The table shows the balance of a money market account over time. write a function that represents the balance y(in dollars) after t years.

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16