Jane Livingston, an industrial engineer at Energy Conservation Service, has found that the anticipated profitability of a newly developed water‐heater temperature‐control device can be measured by net present worth as PW = 5.63V(4.3X - $15) - 33,580 where V is the number of units produced and sold and X is the sales price per unit. She also found that the V parameter value could occur anywhere in the range of 1,500 to 5,000 units and the X parameter value anywhere between $10 and $35 per unit. Develop a sensitivity graph as a function of number of units produced and sales price per unit.