25x^2 - 16 =
(5x + 4)(5x - 4) <==
The slope is 1, -3 - 2 over 0 - 5 = -5/-5 which = 1
The volume of the sphere is expressed in the formula V = 4/3 pi r^3. The rate of change of volume is determined by differentiating the formula: dV/dt = 4pi r^2 dr/dt. When we substitute 500 cm3/min as dV/dt and 30 cm as r. Then dr/dt is equal to 0.0442 cm/min
