I need to solve for x. -4x+-7

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?

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

What is the circumference of a circle with an area of 50.24 cm²?