A chemical company spends $2 million to buy machinery before it starts producing chemicals. Then it spends $.5 million on raw material for each million liters of chemical products.

a) The number of liters produced ranges from 0 to 5 million. Make a table showing the relationship between the number of million liters produced, L, and the total cost, C, in millions of dollars, to produce that number of million liters.

b) Find a formula that expresses C as a function of L

I'm pretty sure I have a down, but b is confusing for me. Can anyone help?