HELPP PLEASE On a given day, the exchange rate from US dollars to Australian dollars was 1 US dollar = 1.31
Australian dollar. About how much could you get in Australian dollars if you exchanged $560 US
dollars on that day?

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