*HELP i don’t understand*

Which statement about the annual percentage rate (apr) is not true?

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

When steve woke up. his temperature was 102 degrees f. two hours later it was 3 degrees lower. what was his temperature then?