Find the maximum or minimum value of the given objective function of a linear programming problem. The figure illustrates the graph of feasible points. 
z = -5x - y. Find maximum.
A. maximum: -22
B. maximum: -18
C. maximum: -15
D. no maximum
Answer: C
Mathematics
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Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Multiply.(5y + 2)(4y - 1)
A. 20y2 + 3y - 2 B. 9y2 + 1 C. 20y2 - 2 D. 20y2 - 13y - 2
Mathematics
Provide an appropriate response.A company manufactures two products, X and Y, and the joint-cost function for these products is given by 
where c is the total cost of producing x units of X and y units of Y. Determine the marginal cost with respect to x when 
and 
Fill in the blank(s) with the appropriate word(s).
Mathematics
Find all real numbers ? in [0, 2?] satisfying the condition. cos ? = 1
A. ? = -?
B. ? = ?
C. ? = 0
D. ? = 
Mathematics