Solve the problem.A construction crane lifts a 100-lb bucket originally containing 155 lb of sand at a constant rate. The sand leaks out at a constant rate so that there is only 77.5 lb of sand left when the crane reaches a height of 60 feet. How much work is done by the crane?
A. 12,975 ft ? lb
B. 2925 ft ? lb
C. 15,300 ft ? lb
D. 6975 ft ? lb
Answer: A
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Solve each of the following systems of equations. If the system is inconsistent or dependent, say so.6x + 9y = -36-4x + 6y = 24
A. (-7, 1) B. No solution C. (-6, 1) D. (-6, 0)
Use transformations to graph the function.f(x) = ex - 5
A. 
B. 
C. 
D. 
Solve the problem.An open-top rectangular box has a square base and it will hold 256 cubic centimeters (cc). Each side of the base has length x cm. The box's surface area S is given by S(x) = 
+ x2. Estimate the minimum surface area and the value of x that will yield it.
A. 207 cm2 when x = 6 cm B. 256 cm2 when x = 8 cm C. 192 cm2 when x = 8 cm D. 256 cm2 when x = 6 cm
Solve the problem.The circle graph shows the percent of the total population of 15,300 of Springfield living in the given types of housing. Round your result to the nearest whole number. 
Find the number of people who live in duplexes.
A. -153 people B. 4 people C. 612 people D. 14,688 people