Solve the problem.The data below represent the average monthly cost of natural gas in an Oregon home. 
Above is the graph of 47.35 sin x. Make a scatter diagram of the data. Find the sinusoidal function of the form 
which fits the data.
What will be an ideal response?
y = 47.35 sin 
+ 66.25
Mathematics
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Determine whether the given number is approximate or exact.The cost of gasoline is $0.979 per gallon.
A. Exact B. Approximate
Mathematics
Express the following in interval notation.
A. (-?, 0] ? (4, ?) B. (0, 4] C. (-?, 0) ? (4, ?) D. (-?, 0) ? [4, ?)
Mathematics
Solve.The textbook for a history class costs $50. There are 31 students in the class. What is the total cost of the history books for the class?
A. $1519 B. $81 C. $1550 D. $1500
Mathematics
Find an equation of an ellipse satisfying the given conditions.Foci at (-2, 0) and (2, 0); length of major axis: 8
A. 
+ 
B. 
+ 
C. 
+ 
D. 
+ 
Mathematics