The power generated by a windmill is related to the speed of the wind by the formula 
, where 
is the speed of the wind (in mph) and 
is the power (in watts). Find the speed of the wind when the windmill is producing 413 watts of power.
A. 27.07 mph
B. 28.99 mph
C. 28.25 mph
D. 27.44 mph
E. 27.56 mph
Answer: D
Mathematics
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Write the English phrase as an algebraic expression. Let x represent the number. Simplify the expression, if possible.Three times a number decreased by 7
A. 
B. 3x - 7
C. 3 - 7x
D. 3x + 7
Mathematics
Find the product or quotient.
? 
A. 
B. 
C. 
D. 
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Identify the numbers from the given list that belong to the indicated set. 7, 
, -7, 0, 
, 
, 0.56Irrational numbers
A. 
, 
B. 
, 
, 0.56
C. 
D. 
, 0.56
Mathematics
Solve the inequality.x2 - 9 ? 0
A. [-3, 3] B. (-?, -9] or [9, ?) C. (-?, -3] or [3, ?) D. [-9, 9]
Mathematics