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3 years ago

15

Last year the chess club had 20 members. This year the club has 15 members. Find the percentage of change and state whether the

percent of change is an increase or decrease

1 answer:

AlekseyPX3 years ago

8 0

15/20=.6
1-.6=.4
It decreased 40% since last year <span />

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domain: x>3/5

Step-by-step explanation:

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To do this we will have to apply chain rule because we have an inner and outer functions.

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Chain rule formula states that: d/dx(g(f(x)) = g'(f(x))f'(x)

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therefore f'(x)= 1/2x^(-1/2) and f'(x) = -5

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In this case it will be 3-5x > 0, because 3-5x is a denominator and anything divide by zero is infinity/undefined

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The tree diagram shown in the attached image shows the 15 possible results

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