After 8 hours of snow, the temperature had changed
by a
total of -169 What was the
average change in temperature
each hour while it was snowing?
I

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