Susan has grades of 84, 65, and 76 on three math tests. what grade must he obtain on the next test to have an average of exactly 80 for the four tests?

You have 3 boxes, one "strawberries"; one "mentos" and one "mixed".but you know that all the labels are in incorrect order .how do you know witch is witch?

What is the quotient of m^6/5 ÷ 5/m^2? assume m does not equal pl

The price of a lawn mower is x dollars. the store is having a 75% end of summer clearance sale. which expression can be used to find the clearance price of the mower? a) .25x b) .75x c) x - .25(75) d) x + .25(75)