Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

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For this sort of problem, we'll use the equation y = k/x, which is for inverse variations. First, we'll need to solve for k.

4 = k/12

k = 48

Next, we'll need to plug k into our equation from the beginning, as well as 3 for x in order to solve for y.

y = 48/x

y = 48/3

y = 16

Therefore, your answer is y = 16.

Hope this helps!! :)

domain is the set of all real values for x (-∞,∞)

Step-by-step explanation:

and

We need to find the domain of

Plug in f(x) and g(x)

Multiply it using FOIL method

WE got an cubic equation, there is no restriction for x.

So domain is the set of all real values for x (-∞,∞)