Given that f(x) = sin x, g(x) = cos x, and h(x) = tan x, evaluate the given function. The point (x, ), on the circle , also lies on the terminal side of an angle ? in quadrant II. The point , on the circle , also lies on the terminal side of an angle ? in quadrant III.f(2?)

A.  
B. - 
C.
D. - 


Answer: C

Mathematics

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Solve the problem.The following table shows the July electric bill of selected homes in Cincinnati along with the number of rooms in each home.  Find the equation of the line of best fit for the number of rooms and the electric bills, and use it to predict the bill for a home with 11 rooms.

A. y = 11.8x + 43; $168 B. y = 12.1x + 44; $177 C. y = 12.1x + 47; $163 D. y = 10.2x + 51; $178

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Match the equation of the parabola with the appropriate description.y = 6 + 3x - x2

A. Opens left B. Opens up C. Opens down D. Opens right

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Find the values that make the equation true.[6  b  -5] + [a  -1  c] = [-6  3  -6]

A. = 12, b = -4, c = 1
B. = 0, b = 2, c = -11
C. = -12, b = 4, c = -1
D. = - 1, b = - 3, c = 

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Find the amount that should be invested now to accumulate the following amount, if the money is compounded as indicated.$23,400 at 7% compounded annually for 15 years

A. $8481.24 B. $14,918.76 C. $64,561.34 D. $9074.92

Mathematics