Answer:
Derivative: P’(x) = 200 - 2x
If P’(x) = 0 , x = 100
Therefore P’ is positive and P increases until x = 100
So the maximum units to maximize profits is 100 units
And for 100 units the profit in dollar is:
20000 - 10000 = 10000
10000 dollars
Peter is a-8 in 9 years, (a-8)+ 9+ a+ 9= 76
1115.8
Step-by-step explanation:
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