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
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Provide an appropriate response.A student claims that 
always exists, as long as a and b are both positive. Refute this by giving an example of a function for which this is not true.
What will be an ideal response?
Show that the sets are equivalent by carefully describing a one-to-one correspondence between the sets.The set of whole numbers and the set of even natural numbers:W = {0, 1, 2, 3, . . . } and E = {2, 4, 6, 8, . . . }.
What will be an ideal response?
The question(s) that follow refer to the problem of finding the minimum spanning tree for the weighted network shown below.
Using Kruskal's algorithm, which edge should we choose last?
A. BC B. AB C. AC D. CD E. none of these
Make the indicated temperature conversion. Round answers to one decimal place if necessary.In Satoru's hometown, the highest temperature ever recorded is 114°F. Convert this temperature to Celsius.
A. 31.3° C B. 81.1° C C. 237.2° C D. 45.6° C