In this problem, p is the price per unit in dollars and q is the number of units.
Suppose the weekly demand for a product is given by p + 2q = 840 and the weekly supply before taxation is given by p = 0.02q2 + 0.55q + 7.4.
Find the tax per item that produces maximum tax revenue. (Round your answer to the nearest cent.)
Find the tax revenue. (Round your answer to the nearest whole dollar.)