Question

ALG. 2 Help Please?

At which root does the graph of f(x) = (x + 4)^6(x + 7)^5 cross the x axis?

a. -7
b. -4
c. 7
d. -4

Which statement describes the graph of f(x) = 4x^7 + 40x^6 + 100x^5?

a. The graph crosses the x axis at x = 0 and touches the x axis at x = 5.
b. The graph touches the x axis at x = 0 and crosses the x axis at x = 5.
c. The graph crosses the x axis at x = 0 and touches the x axis at x = –5.
d. The graph touches the x axis at x = 0 and crosses the x axis at x = –5.

At which root does the graph of f(x) = (x – 5)^3(x + 2)^2 touch the x axis?

a. -5
b. -2