Answer:
*The function has a minimum in x=-1
*The function has a maximum in x=1
*The second derivative is not enough to determine if the function has either a maximum or a minimum in x=0.
Step-by-step explanation:
1. Evaluate the second derivative in the first critical point x=-1:




As the value is smaller than zero, the function has a minimum in x=-1
2. Evaluate the second derivative in the second critical point x=1




As the value is larger than zero, the function has a maximum in x=1
3. Evaluate the second derivative in the third critical point x=0




As the value is equal to zero, the second derivative is not enough to determine if the function has either a maximum or a minimum in x=0.
The right answer is Option C.
Step-by-step explanation:
Income = $69000
Gain = $3000
Total earned= Income + Gain

Expenses on operating activities = $33000
Expenses on non operating activities = $8000
Total expenses = 33000+8000 = $41000
Profit = Total earned - Total expenses

The net profit made by Spila was $31000.
The right answer is Option C.
Keywords: net profit, subtraction
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Make a proportion to get the answer the proportion will be

to give you the answer of 37.5