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. $21.36
C. $21.86
D. $22.86
Answer: C
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Solve the problem.The shape and density of a thin shell are indicated below. Find the coordinates of the center of mass.Shell: "nose" of the paraboloid x2 + y2 = 2z cut by the plane z = 4Density: ? = 
A. 
B. 
C. 
D. 
Maria can invest $1,900 at 
, compounded annually, or at 
, compounded daily. If she invests the money for a year, which is the better investment?
?
A. the 
investment
B. the 
investment
Multiply. Simplify the final answer.
? 
A. 
B. 
C. 
D. 
Solve the problem. Round your answer, if appropriate.A surveyor measured the length of a piece of land at 100-ft intervals (x), as shown in the table. Use the trapezoidal rule to estimate the area of the piece of land in square feet.
A. 32,000 ft2 B. 27,000 ft2 C. 26,000 ft2 D. 26,500 ft2