Consider the following. Demand Function 128 + 2 p= Find the price elasticity of demand for the demand function at the indicated x-value. elastic Quantity Demanded X = 5 Is the demand elastic, inelastic, or of unit elasticity at the indicated x-value? The demand is elastic at this x-value. The demand is inelastic at this x-value. The demand is of unit elasticity at this x-value. inelastic Use a graphing utility to graph the revenue function. Identify the intervals of elasticity and inelasticity. (Enter your answer using interval notation.)