Which expressions give the monthly pay of an employee with 20 hours of training? a. 20(pay) or 20(p) b. 20 x pay or 20 x p c. pay(20) or p(20) d. hours(20) or h(20)

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