Answer:
The solution yields a number equal to -136.
Step-by-step explanation:
Let x represent the number, leading to the following equation:
x + 2 = 7/8 x - 15
Rearranging gives:
x - 7/8 x = -15 - 2
1/8 x = -17
x = -17 * 8 resulting in -136.
This is quite an unusual scenario...:/ It all hinges on her weekly earnings. If she were to work 40 hours each week at $10 per hour, then she would have sufficient funds. Even if she were a student working part-time for 30 hours at $8 per hour, she would still accumulate enough.
I think it's a linear model since it consistently adds +3 each day.