Is 7+8x=y proportional, if so what is the constant proportionality? is y=-2/5x proportional, if so what is the constant proportionality?

How can we find the measure of an exterior angle if we know the measurement of an interior angle

For which pair of functions is (gof)(a)=|a|-2?

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?