What is x equal to in the equation cos42=x/15?

This is the number of parts out of 100, the numerator of a fraction where the denominator is 100. submit

Fabian harvests 10 pounds of tomatoes from his garden. he needs 225 pounds to make a batch of soup. if he sets aside 2.8 pounds of tomatoes to make spaghetti sauce, how many batches of soup can fabian make?

Find the zeros of each function. f(x) = 6x^2 - 7x - 20