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Trava [24]
3 years ago
13

The function f(x) varies inversely with x and f(x) = 4 when x = 12.

Mathematics
2 answers:
goldfiish [28.3K]3 years ago
4 0
Seriously know the answer, its 16, not 1. Just did it.
Alex777 [14]3 years ago
4 0
<h3>Answer: C. 16.</h3>

Step-by-step explanation:

We are given inverse relation between f(x) and x.

The function f(x) varies inversely with x.

Inverse relation could be written as

f(x) = \frac{k}{x}.

We also given f(x) = 4 when x = 12.

Plugging f(x) = 4 and x=12 in the above inverse relation to get the value of constant k.

4=\frac{k}{12}.

On cross multiplying, we get

12× 4 = 12 \times \frac{k}{12}

48 = k

Now, we need to find f(x) for x=3.

Plugging k=48 and x=3 in inverse relation, we get

f(x) = \frac{48}{3} = 16.

<h3>Therefore, f(x)=16 when x=3.</h3>
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