Solve the problem.Assume that a person's threshold weight W, defined as the weight above which the risk of death rises dramatically, is given by W(h) = 
3, where W is in pounds and h is the person's height in inches. Find the threshold weight for a person who is 6 ft 6 in. tall. Round your answer to the nearest pound.
A. 221.5 lb
B. 255 lb
C. 285.6 lb
D. 154.5 lb
Answer: B
Mathematics
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Solve the problem.Two airplanes leave an airport at the same time, one going northwest (N35°W) at 423 mph and the other going east at 349 mph. How far apart are the planes after 2 hours to the nearest mile?
A. 1273 mi B. 1188 mi C. 1428 mi D. 714 mi
Mathematics
Estimate the sum or difference by first rounding to the nearest ten.84
A. 200 B. 180 C. 170 D. 177
Mathematics
Multiply.390 × 40
A. 15,600 B. 15,610 C. 15,590 D. 15,596
Mathematics
Plot the point given in polar coordinates.
A. 
B. 
C. 
D. 
Mathematics