Are these functions inverses of each other?Be sure to explain how you know they are inverse or why they are not. Show all work necessary.

3x + 4y = 5 x- 3y = -7 solve by substitution

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

Factor the polynomial by its greatest common monomial factor.