a$.$ Use graph paper to carefully hand$-$draw the firms demand curve, MC curve, and MR curve.

Your x$-$axis should show Q and go from $0$ to $50.$ Your y$-$axis should show P $($and C$)$ and also

go from $0$ to $50.$ You will get credit for a neat diagram.

b$.$ Use dotted lines and shading to show the areas of consumer surplus, producer surplus, and

deadweight loss.

c$.$ Using the geometric rule that the area of a triangle is equal to height x width x $(1)/(2),$ find the

area of deadweight loss. You will get extra marks for using demand, MC and MR to be

precise about the height and width of the triangle. For example, MR $=$ MC will give you the

bottom point of the triangle $($as this is where the two lines cross$).$