As with many systems of inequalities, the solution is not a single point, but is an area of the coordinate plane. For this pair of inequalities, it is a wedge of the plane in the third quadrant, where the solutions overlap.
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If you have a list of points, the point that is a solution will be the one that lies in the doubly-shaded wedge (not on one of the dashed lines).
Since Christi earns $21 per hour, to find how much she earns by working 19 hours per week we need to multiply the hourly wage by the number of hours she works in a week:
id k how to explain but since he saves 5 dollars he basically has 15 dollars in his bank account u just need to multiply 15 with however many weeks he saves up for