Find the rate of change of the volume of a ball with respect to time when the radius is 10 cm if the radius changes at a constant rate of 2cm/sec (v= 4/3πr^3)

How do i do this activity, is appreciated

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol

Plzz ! need the answer asap! 7% of 980