Find the required value by setting up the general equation and then evaluating.Find y when x = 28 if y varies directly as x, and y = 12 when x = 16.
A. 21
B. 
C. 7
D. 28
Answer: A
Mathematics
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A. 18 B. 14 C. 15 D. 17 E. 16
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Graph the function.f(x) = |5x|
A. 
B. 
C. 
D. 
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Write the series using summation notation.18 + 28 + 38 + 48 + ...
A. 
B. 
C. 
D. 
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Solve the equation on the interval 0 ? ? < 2?. sin ? + 
cos ? = -1
A. 
B. 
C. 
D. 
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