<h3>
Answer: x = 0.18 and x = -1.85</h3>
Work Shown:

I used the quadratic formula.
Visual confirmation is shown below. The solutions are the x coordinates of the x intercepts, aka roots. GeoGebra is another tool you can use if you prefer that over Desmos. Both are free apps.
10000000 is the answer by multiplication
180min x 5in = 48in
36min x 1in = 48in
1728 min = 48 in
28.2 hours
Could you be more specific about what you need to know here? Where are the instructions for this problem? Try to explain what you do understand and what you don't.