Answer:
f = 6y + 3
Step-by-step explanation:
<u>The equation to reflect this condition is:</u>
<u>Where</u>
- 3 - is constant, the initial number of flights
- 6 - coefficient, number of flights per year
- y- number of years
- f- total number of flights
What’s the rest of the qurstion?
When you see questions of this nature, test the individual inequalities and look out for their intersection.
For

Choose a point in the lower or upper half plane created by the line

The above line is the one which goes through the origin.
Now testing (1,0) yields,

That is,

This statement is true. So we shade the lower half of

For

We test for the origin because, it is not passing through the origin.

This yields

This statement is false so we shade the upper half.
The intersection is the region shaded in B. The top right graph