The supply and demand for fresh jumbo lump crabmeat in a local fish store are related by the equations

Supply: p = S(q) = 4q + 10

and

Demand: p = D(q) = 40 - 4q,
where p represents the price in dollars per pound and q represents the quantity of crabmeat in pounds per day. Find the quantity supplied and demanded at each of the following prices.
(a) $20 

(b) $24 

(c) $32
(d) Graph both the supply and demand functions on the same axes.

(e) Find the equilibrium price.
(f) Find the equilibrium quantity.