Try adding a picture next time maybe...?
Answer:
Graph 1 because if you just do the Y coordinate its much easier.
Answer:
Step-by-step explanation:
Given that a company fixed costs are 400 dollars
and variable cost =
per unit and x the no of units produced
Selling price =
per unit
a) Break even units
At break even units selling price = variable cost

Break even units = 76
b) Revenue = Sales - total costs
= 
Use derivative test to get max revenue
R'(x) = 
R"(X) <0
So maximum when I derivative =0 or when

x=38
c) price when x =38 is

500 + 400 + 500 + 400 = 1800 400 divided by 2 = 200 and 500 divided by 2 = 250 1800 + 250 + 200 = (((((2250)))))