$1-$ Sales data for a business shows the following sales associated with their prices. Find and

write the linear demand function, and draw the demand$-$price graph.

$2-$ A new car manufacturer has chosen a skimming pricing strategy for their product. They

aim to sell their cars to $20,000$ potential customers over six years. However, due to

competition, the price cannot exceed $$15,000.$ Use Solver $($Evolutionary option$)$ to

determine the annual pricing that maximizes revenue. What is the optimal initial and last

price? Calculate the total number of cars sold with this strategy over six years and

calculate the resulting profit."