jirdangirl46555 jirdangirl46555 21-05-2021 Mathematics contestada 67POINTS!!!!! WILL MARK BRAINILEST If f(x) = 5x3 and g(x) = x+1 find (f•g)(x). A 5x^4+ 5x^3 B5x^3+1 C 6x^3 D 5x^4+1