precalc questions?

Question

answer:
graph of eq with zeros at: 1, 3, 7-i, and 1-i

if the reflector on a bike tire travels 126 miles in 6 hours, if it is 3 inches from the center, how many revolutions does the tire make in 6 hours?

zeros of p(x)-3x^3-2x^2+25x/7-2?

Answer 1

For the first one, find f(x) with root 7-i and g(x) with root 1-i, and look at (x-1)(x-3)f(x)g(x). f and g can be quadratic.