It’s inna picture what’s the answer

Acylinder and its dimensions are shown. which equation can be used to find v, the volume of the cylinder in cubic centimeters?

Given the equation f(x)=a(b)x where the initial value is 40 and the growth rate is 20% what is f(4)

Which inequality is equivalent to -3x < -12? x < 4 , x < -4 , x > 4, x > -4