Using cylindrical coordinates: z = 16(x^2 + y^2) = 16r^2. z = 32 - 16(x^2 + y^2) = 32 - 16r^2. Curve of intersection: 16r^2 = 32 - 16r^2 ==> r = 1, a circle.
Find and interpret the rate of change and initial value. A phone company charges for service according to the formula: C (n= ) 26 + 0.04n , where n is the number of minutes talked, and C (n) is the monthly charge, in dollars. Find and interpret the rate of change and initial value.