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**PLEASE HELP??? ****STUCK ON THIS!!!!

Suppose that f(w) varies inversely with w and f(w) = 0.75 when w= 8.

What is f(w) when w= 2?

A.) 12
B.) 6
C.) 3
D.) 1.5

My answer choice is C.) 3. I'm not very confident in my answer so..... :/

User Manycheese
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2 Answers

3 votes
I think you have the right answer already
User Shwet
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2 votes

Answer:

C.3

Explanation:

We are given that

f(w) varies inversely with w.

f(w)=0.75 when w=8

We have to find the value of f(w) when w=2

According to question


f(w)\propto(1)/(w)


f(w)=(k)/(w)

Where k=proportionality constant

Substitute the given values then, we get


0.75=(k)/(8)


k=0.75* 8


k=6

Substitute the value of k then, we get


f(w)=(6)/(w)

Substitute the value of w=2

Then, we get


f(w)=(6)/(2)=3


f(w)=3

Hence, option C is true.

User Demz
by
6.8k points