Demand Curve

1st: I need this in a maximum of 1.5 hours.

I have attached the question, kindly go through it keenly

I have also attached what I believe are the answers, however, I have just taken them from a source so I need you to confirm them, confirm that the figures in the solutions and those in the question match.

Also confirm that the solutions are right though I believe if the figures match then the solutions are okay.

Draw the necessary charts like the demand curve and any other needed diagram if any

Organize the work including the calculations to look more presentable and decent.

Thanks