Solve the formula for the specified variable A=P+Prt for r

Anyone know? will mark brainliest if you're correct!

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

What is the measure of angle tvu shown in the diagram below