Given CosGiven Cost and Revenue functions Upper C left parenthesis q right parenthesis equals q cubed minus 11 q squared plus 56 q plus 5000C(q)=q³−11q²+56q+5000 and Upper R left parenthesis q right parenthesis equals negative 3 q squared plus 2500 qR(q)=−3q²+2500q​, what is the marginal revenue at a production level of 4040 ​items?
The marginal revenue is enter your response here dollars per item.