Peggy has $30 to spend on one book at the bookstore. She has a coupon for 15% off the price of one book. She will be charged 7% tax. What is the price (before she uses the coupon) of the most expensive book that Peggy could buy? I will mark brainliest if you give an explanation

Pls urgent max amount of points will be given and pls do not answer if unsure or you will be reported by me and brainliest answer gets the brainliest .. thing so yeh

Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?

F(n + 1) = f(n) – 8. if f(1) = 100, what is f(6)?