Solve the problem.A construction crane lifts a 100-lb bucket originally containing 130 lb of sand at a constant rate. The sand leaks out at a constant rate so that there is only 65 lb of sand left when the crane reaches a height of 50 feet. How much work is done by the crane?
A. 4875 ft ? lb
B. 11,500 ft ? lb
C. 2250 ft ? lb
D. 9875 ft ? lb
Answer: D
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Find the equation of the parabola which has the given vertex V, which passes through the given point P, and which has the specified axis of symmetry.V(1, 2), P(0, 1), horizontal axis of symmetry
A. (y - 2)2 = -(x - 1) B. (x - 2)2 = -(y - 1) C. (y - 2)2 = x + 1 D. (y - 2)2 = x - 1
Find the volume of the shaded solid. Round your answer to 2 decimal places if necessary. Use ? = 3.14 when necessary.
A. 864 m3 B. 678.24 m3 C. 185.76 m3 D. 648 m3
Use a proportion to solve the problem.A bag of fertilizer covers 2000 square feet of lawn. Find how many bags of fertilizer should be purchased to cover a rectangular lawn 90 feet by 230 feet.
A. 1035 bags B. 104 bags C. 11 bags D. 10 bags
Solve the problem.Estimate the minimum number of subintervals needed to approximate the integral
with an error of magnitude less than 10-4 using the Trapezoidal Rule.
A. 245 B. 151 C. 174 D. 300