Solve the formula for the specified variable.A = 2?rh + 4?r for h
A. h = 
B. h = A - 4?r
C. h = 
D. h = A - 4?r - 2?r
Answer: A
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Solve the problem.A power outage affected all homes and businesses within a 20 mi radius of the power station. If the power station is located 14 mi north of the center of town, find an equation of the circle consisting of the furthest points from the station affected by the power outage.
A. x2 + (y + 14)2 = 400 B. x2 + (y - 14)2 = 20 C. x2 + y2 = 400 D. x2 + (y - 14)2 = 400
Find any vertical asymptotes.f(x) = 
A. x = 2 B. None C. x = -2 D. x = 2, x = -2
Translate the sentence into a multiplication or division statement and solve.What is the quotient of -81 and 9?
A. 9 B. -9 C. -8 D. -10
The demand function for a certain make of replacement cartridges for a water purifier is given by
?
?
where p is the unit price in dollars and x is the quantity demanded each week, measured in units of a thousand. Determine the consumers' surplus if the market price is set at $1/cartridge. Round your answer to the nearest dollar.
?
A. $22,006 B. $21,526 C. $21,445 D. $21,667