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1526.66 is the average of his sales for this period.
The 20th term in the sequence should be 5811307335.
Hope I didn't mess up for your sake
Well actually depending on the size, if a small one I would use liters, but if a large ones like Olympics I would use kilolitres.
Answer:
11- All 0's are on the x and y planes
12- All positive points/numbers are where the x and y axis are both positive (Quadrant 1, 2, and 4)
13- All negative points/numbers would be wherever the x and y axis are negative (Quadrants 2, 3, and 4)