25 POINTS. Use the angle addition formula to find the expression for cos(a+b). Use the same formula to find cos(a+a).

Student price tickets to a movie are $1 and non student tickets are $2. 350 tickets are sold and the total amount made is $450. how many non student tickets were sold ? a) 100 b) 150 c) 200 d)250

2y= 3 2 x−2 y = − 1 3 x + 1 y=− 3 1 x+1

Divide. write in the simplest form. 4 1/6 divided by 10