Company A pays $24 comma 500 yearly with raises of $1 comma 400 per year. Company B pays $ 28 comma 500 yearly with raises of $850 per year. Which company will pay more in year 10? How much more? Which company pays more in year 10?

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