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A chain-saw rental firm charges $21 per day or fraction of a day to rent...

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A chain-saw rental firm charges $21 per day or fraction of a day to rent a saw, plus a fixed fee of $9 for re-sharpening the blade. Additional portions of a day are considered to a be a full day's rental, so rounding upward to identify an entire rental period may be necessary. Let S(x) represent the cost of renting a saw for x days. Complete parts (a) through (m) below.A. Draw a line through each open circle.B. Draw a line through each closed circle.C. Find the cost of renting a saw for more than 2 days and less than or equal to 3 days and graph the amount. Do the same for all days and fractions of days.D. Find the total number of days someone could rent a saw for and end the y-axis at that point. Continue to graph functions until the maximum.(i) What is the independent value?A. S; the cost of renting a sawB. The fixed cost of re-sharpening the bladeC. x; the number of full and partial daysD. The number of saws that are rented per day

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