Based off of my understanding, it doesn’t have a y intercept, so it should just be
y = 30x.
The composite function
works like this:
- Take a number
as input - Evaluate h(x) = 3x. Let's call this output z.
- Evaluate g(x) = 1/(z+2)
So, if we substitute back z = 3x, the final output is 1/(3x+2). We know that the denominator of a fraction can't be zero, so we must impose


<h2>
Explanation:</h2>
Remember you need to write complete questions in order to find exact answers. In this way you haven't provided any function, so I'll choose a quadratic function given by:

So we need to find the entire interval at which this function positive. Put another way:

By using graphing tool, we get the graph shown below. As you can see:
- The function decreases from

- The function increases from

- The graph of the function is a parabola that opens up.
But what is really importan in this problem is that:
- The function is positive over the interval

At this interval the function is positive, that is, 
<h2>Learn more:</h2>
Standard equation of the graph of a parabola:
brainly.com/question/12896871
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The sum of 3/5 and 1/10 is 7/10.