Cost data and demand data for a company's best-selling product are given in the tables below. Find linear regression models for cost and demand and then use them to find the number of items that must be sold to break even on that product. Round your answer to the nearest unit.
Quantity produced 1,000 2,000 3,000 4,000 Total cost $12,000 $16,500 $19,500 $21,000 Quantity demanded 1,000 2,000 3,000 4,000 Price in dollars $12.25 $11.45 $10.95 $10.85
a) 0
b) 10,160
c) 1,078
d) 12,984
e) 40,229
f) None of the above