0.5 divided by 786 times 4/5=

5.088

.5÷786=6.36

6.36×0.8=5.088

I hope this is good enough:

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

d.) yes, because the volume of the cone is greater than the volume of the sphere

step-by-step explanation: