Find an equation of the tangent line at the indicated point on the graph of the function.y = f(x) = 2
- x + 9, (x, y) = (4, 9)
A. y = - 
x + 11
B. y = - 
x + 9
C. y = 9
D. y = 
x - 11
Answer: A
Mathematics
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Use reduction formulas to evaluate the integral.
A. - 
sin 4x cos2 4x + 
+ 
sin 8x + C
B. - 
sin 4x cos3 4x + 
+ 
sin 8x + C
C. - 
sin 4x cos3 4x + 
+ 
cos 8x + C
D. - 
sin 4x cos3 4x + 
+ 
sin 8x + C
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Write the decimal as a percent.0.1601
A. 160.1% B. 16.01% C. 0.01601% D. 1.601%
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For the problem below, ? is a central angle in a circle of radius r. Find the length of arc s cut off by ?. ? ?= 30°, r = 2 mm. ? If the answer needs rounding, round it to three significant digits. ? s = __________ mm
What will be an ideal response?
Mathematics
Find the domain of the rational function.h(x) = 
A. all real numbers B. {x|x ? -8, x ? 8} C. {x|x ? -8, x ? 8, x ? -4} D. {x|x ? 0, x ? 64}
Mathematics