In this problem, p is in dollars and q is the number of units. (a) Find the elasticity of the demand function p2 + 2p + q = 100 at p = 9. (b) How will a price increase affect total revenue? Since the demand is inelastic, an increase in price will decrease the total revenue. O Since the demand is inelastic, an increase in price will increase the total revenue. O Since the demand is elastic, an increase in price will increase the total revenue. O Since the demand is elastic, an increase in price will decrease the total revenue. O Since the demand is unitary, there will be no change in the revenue with a price increase