Suppose that the demand function for manicures (finger nail care) in a small town is Qd = 500 - 30p, where Qd is quantity demanded per month and p is the price of manicures. The supply function is given by Qs = 100 + 20p - 5w, where Qs is the quantity supplied and w is the hourly wage of manicurists. Describe qualitatively how a decrease in the wage rate of manicurists affects the supply and demand curves