f(x)=(x - 5)(2x + 7) (7x - 3) has zeros at x = -3.5, x =3/7

Last updated: 7/17/2022

f(x)=(x - 5)(2x + 7) (7x - 3) has zeros at x = -3.5, x =3/7 , and x = 5. What is the sign of f on the interval 3/7<x<5? Choose 1 answer: A f is always positive on the interval. B f is always negative on the interval. C f is sometimes positive and sometimes negative on the interval.