Question 4 of 20 This test: 20 point(s) possible This question: 1 point(s) possible S Submit test For the demand function q =D(p) = 315 - p, find the following. a) The elasticity b) The elasticity at p = 121, stating whether the demand is elastic, inelastic or has unit elasticity c) The value(s) of p for which total revenue is a maximum (assume that p is in dollars) a) Find the equation for elasticity. E(p)= b) Find the elasticity at the given price, stating whether the demand is elastic, inelastic or has unit elasticity. E(121)= (Simplify your answer. Type an integer or a fraction.) Is the demand elastic, inelastic, or does it have unit elasticity? O inelastic O elastic ) unit elasticity c) Find the value(s) of p for which total revenue is a maximum (assume that p is in dollars). $ (Round to the nearest cent. Use a comma to separate answers as needed.)