1. For the equation, find dy/dx

evaluated at the given values.x²y + y²x = 0atx = 5, y = 5

2. The radius of a spherical tumor is growing by 1/3

centimeter per week. Find how rapidly the volume is increasing at the moment when the radius is 4 centimeters. [Hint: The volume of a sphere of radius r is V =43r³.]

(Round your answer to the nearest integer.)