To answer this, we need to see what happens to the curves on the given interval
For f(x), we have that there is a decrease as we are moving from a higher positive value of y to a lower positive value of y over the specified interval
For g(x), we can see that we are moving from a lower positive y value to a higher positive y value
What this mean is that the first option is correct
81300 - 56800 = 24500....so she made 24500 in passive income for the year. We need per month, so we divide by 12 because there is 12 months in a yr. 24500/12 = 2041.67 per month