A circle with circumference 18 has an arc with a 120° central angle. What is the length of the arc?

6

Step-by-step explanation:

A circle is 360 degrees

The central angle is 120 degrees

120/360 = 1/3

The arc is 1/3 of the circle or 1/3 of the circumference

1/3 * 18 = 6

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option