On October 31, Betty and Paul fill their 300-gallon oil tank for their heater. Beginning in November they use an average of 15 gallons of oil per week.
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a. Complete the table of values.
w (weeks) A (gallons)
0
4
8
12
16
-)
-)
2)
b. Write an equation that expresses the amount of oil, A, in the tank in terms of the number of weeks, w, since
October 31.
A=
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the horizontal axis, and A on the vertical