Let f(x)=3x+2 and g(x)=x-3. Find f(x)+g(x)

Given: ac and db are diameters. m∠3=

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

Just tell me how to set up the equation.