Answer:

Step-by-step explanation:
The functions for cost and revenue are given below:

The profit will be maximized at its <u>line of symmetry,</u>
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From P(x), a=-13.85, b=1939
<u>Line of symmetry,</u>
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<u>The maximum profit that can be made will occur when x=70</u>
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The maximum profit that can be made form the sales of the oven is $12,465.
It could be square, rectangle, parallelogram, rhombus/diamond but, trapezoid could not be.
Answer:
56
Step-by-step explanation:
z varies jointly with x and y:
z = kxy
When x = 2 and y = 2, z = 7.
7 = k(2)(2)
k = 7/4
z = 7/4 xy
When x = 4 and y = 8:
z = 7/4 (4)(8)
z = 56
Not sure but you can figure it out.