Looking to solve for B, the elasticity of both demand and supply

There is a competitive market for raspberries. The supply curve is given by Q = 3P - 40 for price in pennies per box, and quantity in millions of boxes sold per year. The demand curve is given by Q = 110 - 2P. (a) Solve for the market price and quantity of raspberries. (b) Find the point elasticities of both demand and supply, at the market price and quantity