Question 702744
f(x)=4x-3
 g(x)=x^4+2x 
(f-g)=4x-3-(x^4+2x)
(f-g)(3)=4x-3-x^4-2x
(f-g)=2x-x^4-3
(f-g)(3)=2(3)-(3)^4-3
        =6-81-3
        =-78