Solve the problem.Tom sleeps an average of 8.29 hours a day. In one non-leap year, how many hours does Tom sleep?
A. 431.08 hours
B. 2989.35 hours
C. 3067.3 hours
D. 3025.85 hours
Answer: D
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Solve the problem.A ramp L ft long has an incline of ?. The work W needed to move an object weighing P lb up the ramp is given by W = PL(sin ?). To the nearest unit, find the work needed to move a trunk when: 
A. 792 ft-lb B. 959 ft-lb C. 871 ft-lb D. 3840 ft-lb
Solve the problem.A rectangular piece of cardboard measuring 15 inches by 29 inches is to be made into a box with an open top by cutting equal size squares from each corner and folding up the sides. Let x represent the length of a side of each such square. For what value of x will the volume be a maximum? If necessary, round to 2 decimal places.
A. 11.52 in. B. 3.15 in. C. 13.79 in. D. 23.04 in.
Determine whether the matrix is in row-echelon form. If it is, then determine also whether it is in reduced row-echelon form.
A. Yes; yes B. Yes; no C. No
Find the correlation coefficient.Consider the data points with the following coordinates: 
A. 0.1085 B. 0.2145 C. -0.0537 D. -0.0783