Solve the problem.A company has the following production function for a certain product: p(x, y) = 28x0.2y0.8 .Find the marginal productivity with fixed labor, py .
A. 22.4
0.8
B. 22.4yx0.2
C. 22.4
0.2
D. 22.4
0.2
Answer: C
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Match the graph to the given cylindral or spherical equation.r2 + (z + 1)2 = 1
A. 
B. 
C. 
D. 
Provide an appropriate response.When an improper fraction is converted, if there is a remainder, it is:
A. a whole number. B. the numerator. C. a prime number. D. the denominator.
Provide an appropriate response.Two supermarkets, R and C, want to run a promotional on the same item. A market research firm provided the payoff matrix below, where each entry indicates the percentage of customers going to market R at the indicated prices of that item. Find the saddle value, and the optimum strategy for each store. Store C 
Store R 
A. 60%; R sells the item at $1.85, C sells the item at $1.55. B. 50%; R sells the item at $1.85, C sells the item at $1.55. C. 50%; R sells the item at $1.55, C sells the item at $1.85. D. 60%; R sells the item at $1.55, C sells the item at $1.85.
Factor, if possible.x2 - 3xy - 18y2
A. (x - 6y)(x + y) B. (x - 6y)(x + 3y) C. (x - y)(x + 3y) D. (x + 6y)(x - 3y)