Find decimal notation, round as indicated.- 
Round to the nearest thousandth.
A. -0.456
B. -0.457
C. -0.454
D. -0.455
Answer: D
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Solve the problem. Round to two decimal places unless otherwise indicated.Suppose a cost-benefit model is given by y = 
, where y is the cost in thousands of dollars for removing x percent of a given pollutant. Find the cost of removing 75% to the nearest dollar.
A. $5900 B. $17,700 C. $4425 D. $3000
Solve the problem.Fahrenheit temperature F is a linear function of Celsius temperature C. The ordered pair (0, 32) is an ordered pair of this function because 0°C is equivalent to 32°F, the freezing point of water. The ordered pair (100, 212) is also an ordered pair of this function because 100°C is equivalent to 212°F, the boiling point of water. Use the two given points and the point-slope formula to write F as a function of C. Find the Fahrenheit temperature of the inside of a car that is 35° C.
A. F = 
C + 32; 82.7°F
B. F = 
C - 32; 90.3°F
C. F = 
C + 32; 95°F
D. F = 
C - 32; 86°F
Solve the problem.A force of 5 pounds acts in the direction of 5° to the horizontal. The force moves an object along a straight line from the point (5, 4) to the point (18, 13), with distance measured in feet. Find the work done by the force. Round the answer to one decimal place, if necessary.
A. 79.1 ft-lb B. 15.8 ft-lb C. 78.8 ft-lb D. 109.6 ft-lb
Find the center of the hyperbola.7x2 - y2 - 84x + 6y + 68 = 0
A. (6, -2); B. (1, 3); C. (-6, -3) D. (6, 3)