Please show work and could you please type up the answers

eap Chips Corp. has determined that the profit, in dollars, derived from the production and sales of units of device model PQX073 is given by a) Find the marginal profit in terms of x: b) Use marginal analysis to find an approximation to the change in profit from sales of device model PQX073 if the number of units sold goes from 70 to 75: (If needed, round to 2 decimal Places.) Add Work Submit Question