D the point of intersection is the solution
The slope-point form of line:

We have the points (-9, 7) and (6, 2). Substitute:

The slope-intercept form of line:
.
We have the slope m:

Pu the coordinates of the point (6, 2) to the equation:

<em>add 2 to both sides</em>


Answer:
37.5 childrens tickets were sold.
Step-by-step explanation:
225 divided by 2 divided by $3.00