1. DETAILS BERRAPCALC7 3.6.025. For the equation, find dy/dx evaluated at the given values. x2y + y2x = 0 at x = -4, y = 4 dy dx7. DETAILS BERRAPCALC7 4.4.011. Because of the popularity and power of smartphones, demand for wireless communication is growing rapidly. Suppose monthly global data traffic is predicted to be 3.90-529% petabytes, where x is the number of years since 2015. Find the relative growth rate in any year x. % per year 8. DETAILS BERRAPCALC7 4.4.022. For the demand function D(p), complete the following. D(P) = 900 P (a) Find the elasticity of demand E(p). E(p) = (b) Determine whether the demand is elastic, inelastic, or unit-elastic at the price p = 3. O elastic O inelastic unit-elastic