Answer
Part A. Cost = $2.549/gal
Part B. 12 weeks
Work Step by Step
Part A.
p = 2.399 + 0.03w
p = 2.399 + 0.03(5)
p = 2.399 + 0.15
p = 2.549
Part B.
p = 2.399 + 0.03w
2.759 = 2.399 + 0.03w
0.36 = 0.03w
12 = w
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