Help? ik im dumb but i need good grades and i can risk getting anything wrong
1 answer:
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Answer:
The salary after four consecutive increase = $ 46794.34
Step-by-step explanation:
According to question,
salary of MR. John = $ 40000 per year
percentage py increase = 4%
Let the salary after four consecutive pay increase = x
So, X = 40000 (1 +)^4
Or, X = 40000 ()^4
Or, X = 46794.34
Hence the salary increase after four consecutive pay increase at 4% = $46794.34 Answer
Answer:
(-5, 0) ∪ (5, ∞)
Step-by-step explanation:
I find a graph convenient for this purpose. (See below)
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When you want to find where a function is increasing or decreasing, you want to look at the sign of the derivative. Here, the derivative is ...
f'(x) = 4x^3 -100x = 4x(x^2 -25) = 4x(x +5)(x -5)
This has zeros at x=-5, x=0, and x=5. The sign of the derivative will be positive when 0 or 2 factors have negative signs. The signs change at the zeros. So, the intervals of f' having a positive sign are (-5, 0) and (5, ∞).
