Translate this phrase into agebric expression Nine less than the product of 16 and Jose's age

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)

Can someone me out here and the tell me the greatest common factor

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.