Find the exact roots of the polynomial; write the roots in simplest radical form, if necessary.
f(x)=7x^3-11x^2-10x+8
my professor mentioned that the roots are: 2, 1 and 4/7. but i don't know she came up with 4/7. me.

Write a function for a rotation 90 degrees counter clockwise about the origin, point 0

Solve the problem by making up an equation. a man could arrive on time for an appointment if he drove the car at 40 mph; however, since he left the house 15 minutes late, he drove the car at 50 mph and arrive 3 minutes early for the appointment. how far from his house was his appointment?

An equation in slope-intersept form the lines that passes thought (-8,1) and is perpindicular to the y=2x-17.