Please answer every question.

2. A company's demand and cost functions are given by p(q)=0.05q+525 and C(q)=0.01q37q2+85q. What is the company's profit when marginal revenue is $450 per item? Given Cost and Revenue functions C(q)=q211q2+56q+5000 and R(q)=3q2+2400q, what is the marginal proft at a production level of 60 items? The marginal profit is dollars per item Given Cost and Revenue functions C(q)=q38q2+56q+5000 and R(q)=3q2+2400q, what cost is incurred when marginal profit is $0 ? The costs are $ (Round to nearest cent.) Given Cost and Price (demand) functions C(q)=100q+45000 and p(q)=2.3q+950, what is the marginal revenue whin costs are $70,000 ? The marginal revenue is dolars per item. If necessary, round to the nearest integer