Differentiate.
Mathematics
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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 
+ 66.25
B. y = 45.05 sin 
+ 66.25
C. y = 45.05 sin 
+ 21.20
D. y = 45.05 sin 
+ 21.20
Mathematics
A right triangle with acute angle ? is given. Evaluate the indicated trigonometric function of the acute angle ?.Find sec ?.
A. 
B. 
C. 
D. 
Mathematics
Graph the fraction on a number line.
A. 
B. 
C. 
D. 
Mathematics
Factor when possible.27x3- 48x
A. 3x(3x - 4)2 B. (9x + 12)(3x - 4) C. 3x(3x + 4)(3x - 4) D. 3x(3x + 4)2
Mathematics