F(x) = x + 7, g(x) = x - 7

Find the value of the cosine for angle a

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10

What’s -11-33k and factor each expression completely