-12(c+22)= -13c+3
What value of c makes the equation true?

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books

If value of cos330° is √3/2 then find tan165°.

The measurement of one angle of a right triangle is 42° what is the measurement of the third angle? (there is no picture)