Problem 1: Jackson is going to have five four wheelers at his birthday party. Each four wheeler takes 4 gallons of gas. How many total gallons of gas do they need to fill up all the four wheelers?

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.

Kayla and alberto are selling fruit for a school fundraiser. customers can buy small boxes of grapefruit and large boxes of grapefruit. kayla sold 3 small boxes of grapefruit and 1 large box of grapefruit for a total of $65. alberto sold 1 small box of grapefruit and 1 large box of grapefruit for a total of $55. what is the cost each of one small box of grapefruit and one large box of grapefruit?

The sum of the speeds of two trains is 720.2 mph. if the speed of the first train is 7.8 mph faster than the second train, find the speeds of each.