Build a variable expression for the given phrase.A number decreased by two
A. x + 2
B. x - 2
C. 2 - x
D. 
Answer: B
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Solve the problem.The Cool Company determines that the supply function for its basic air conditioning unit is 
and that its demand function is 
, where p is the price. Determine the price for which the supply equals the demand.
A. $22.36 B. $22.86 C. $21.36 D. $21.86
Solve the problem.A jet plane traveling at a constant speed goes 1200 mi with the wind, then turns around and travels for 1000 mi against the wind. If the speed of the wind is a constant 50 mph, and the total flight took 4 hours, find the speed of the plane.
A. 550 mph B. 435 mph C. 525 mph D. 605 mph
Determine the real solutions to the system of nonlinear equations.xy = 1-6x - y = 5
A. 
, 
B. (3, -3), (2, -2)
C. 
D. 
, 
Convert to an exponential equation.log10100 = 2
A. 210 = 100 B. 10010 = 2 C. 1002 = 10 D. 102 = 100