Verify the identity.

(2 sin + 2 cos 0)2 = 4 + 4 sin 20

-simplify your answer

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

If you answer 2+2 you will get over 80 points

Tyler reads 2/5 of a book on monday, 1/3 of it on tuesday, 2/9 of it on wednesday, and 3/4 of the remainder on thursday. if he still has 14 pages left to read on friday, how many pages are there in the book?