Solve the problem.The production function z for an industrial country was estimated as 
where x is the amount of labor and y the amount of capital. Find the marginal productivity of labor.
A. 7x6y5
B. 14x6y5
C. 10x7y4
D. 5x7y4
Answer: A
Mathematics
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Calculate the arc length of the indicated portion of the curve r(t).r(t) = 
t3/2i + (4t sin t)j + (4t cos t)k ; -3 ? t ? 7
A. 120 B. 248 C. 200 D. 132
Mathematics
Determine whether the graph is the graph of a function.
A. Function B. Not a function
Mathematics
Provide an appropriate response.True or false? i3 = -i
A. True B. False
Mathematics
Use a formula to solve the problem.A pie-shaped (triangular) lake-front lot has a perimeter of 1600 feet. One side is 100 feet longer than the shortest side, while the third side is 300 feet longer than the shortest side. Find the lengths of all three sides.
A. 400 ft, 500 ft, 700 ft B. 500 ft, 500 ft, 500 ft C. 100 ft, 200 ft, 300 ft D. 500 ft, 600 ft, 800 ft
Mathematics