Let a = {1,3,5,7,9}, b= {3,6,9}, and c= {2,4,6,8}.
which of the following is correct, is answer a or b correct?
a)
(a ? b) ? c = a ? (b ? c)
b)
(a ? b) ? c = (b ? a) ? c

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?

Which number line represents the solution set for the inequality - x 24?

Awater tank holds 18000 gallons. how long will it take for the water level to reach 6000 gallons if the water is used at anaverage rate of 450 gallons per day