For partial credit, please show your work

Question $1.$ The Table below shows cost data for the Brumlik Corp who is selling widgets in a purely competitive market.

d$)$ If the market price is $\backslash (\backslash$$ $100\backslash ),$ how many units will the competitive firm produce?

e$)$ On the test, be able to explain what happens in the long$-$run to the number of companies.