This cost data from Hickory Furniture is for the year 2017.

A. Using the high-low method, express the factory utility expenses as an equation where x represents number of chairs produced.
B. Predict the utility costs if 900 chairs are produced.
C. Predict the utility costs if 750 chairs are produced.
D. Using Excel, create a scatter graph of the cost data and explain the relationship between number of chairs processed and utility expenses.

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Month January February March April May June July August September October November December Number of Chairs Produced 425 510 625 725 685 575 510 810 700 650 875 680 Factory Utility Expenses $1,659 1,964 2,406 2,791 2,637 2,214 1,964 3,119 2,695 2,503 3,369 2,618