Solve the problem.The data below represent the average monthly cost of natural gas in an Oregon home.   Above is the graph of 45.05 sin x superimposed over a scatter diagram of the data. Find the sinusoidal function of the form  which best fits the data.

A. y = 45.05 sin  + 21.20
B. y = 45.05 sin  + 21.20
C. y = 45.05 sin  + 66.25
D. y = 45.05 sin  + 66.25


Answer: D

Mathematics

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