Solve the problem.An upholsterer wants to reupholster 280 chairs for a banquet hall. If each chair needs 
pound of brass tacks, how many pounds of brass tacks are needed?
A. 40 pounds
B. 196 pounds
C. 4 pounds
D. 1960 pounds
Answer: A
Mathematics
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Solve.Find the volume of the torus generated by revolving the circle (x - 2)2 + y2 = 1 about the y-axis.
A. 8?2 B. 6?2 C. 4?2 D. 2?2
Mathematics
Solve the problem. Round to an appropriate number of significant digits.A basketball player shoots the ball with a velocity of 23.1 ft/s at an angle of 35.3° with the horizontal. To the nearest tenth, find the magnitude of the vertical component of the resultant vector.
A. 6.7 ft/s B. 9.5 ft/s C. 18.9 ft/s D. 13.3 ft/s
Mathematics
Solve the equation.0.2(9 + t) = 4.2t + 0.8
A. 0.45 B. 0.05 C. 1.05 D. 0.25
Mathematics
Decide whether the relation is a function.
A. Function B. Not a function
Mathematics