Write a function in terms of t that represents the situation. a $900 sound system decreases in value by 9% each year.

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 inequalities and show the solution on a number line. 3/4 (2x-7) ≤ 5

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?