Suppose a college bookstore buys a textbook from a publishing company and then marks up the price they paid for the book 33% and sells it to a student at the marked-up price. If the student pays $75.00 for the textbook, what did the bookstore pay for it? Round your answer to the nearest cent.

Answer 1

1.33x = 75

x = ?

Answer 2

the marked-up price (m), is 33% more than the publisher's price (p)

m = p + .33 p ... 75 = 1.33 p

Answer 3

Solve the given equation. (Round your answers to two decimal places.)
(a)    
ln(x) = 4.2 + ln(7.2)