Please show work and could you please type up the answers.

The revenue, in dollars, derived from the sale of units of device model HVX092 is given by R@) 675t + 540(11 + 3c)-i 80 a) Find the marginal revenue derived from sales of, device model HVX092 in terms of c: (you do not need to expand out your answer.) b) Use marginal analysis to find an approximation to the change -in revenue derived fromsales oldevice model HVX092 if the number of units sold goes from 60 to 627 (If needed, round to 2 decimal places) Submit your final answer into each answer box And upload a file witha Worku box. Add Work Submit Question