Use the Remainder Theorem to find the remainder when f(x) is divided by x-(1)/(7). Then use the Factor Theorem to determine whether x-(1)/(7) is a factor of f(x). f(x)=7x⁴-x³+28x-4. The remainder when f(x) is divided by x-(1)/(7) is _______. Is x-(1)/(7) a factor of f(x)?