The points (-1, -3) and (2, r) lie on a line with slope 3. Find the missing coordinate r

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

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 zoo collects $9.60 for every 24 tickets sold. how much will be collected for 400 tickets?