the correct question is let f(x)=4x+3 and g(x)=-2x+5. find (fog) (5)
we have that f(x)=4x+3 g(x)=-2x+5 (fog) (x)---------> f(g(x))------> 4*[-2x+5]+3---------> f(g(x))=-8x+20+3 f(g(x))=-8x+23 then (fog) (5)=-8*5+23---------> (fog) (5)=-40+23 (fog) (5)=-17 the answer is (fog) (5)=-17
