How to get answer by Mimiwhatsup:

Answer:
When the solution is negative
Step-by-step explanation:
One example, let's say you are buying pens and each pen cost 3 dollars and you cannot spend more than 15 dollars, how many pens can you buy?
The inequality would be 3x < 15, so any negative solution is not reasonable because you cannot buy negative pens. The same goes for most real-world problems dealing with time, money, or distance.
The chef can make 25 cakes
Explaintion:
There is a few ways to solve this but an app say way is to
Multiply the 15 gallons by the denominator of the fraction then divide by 3
So 15x5=75
75/3=25
Therefore the chef can make 25 cakes
The box she ship in has the volume of 1440 cubic inch. The cookie box is 60 cubic inch, so if you divided 1440 into 60, you would get 24. So. she can fit 24 cookie boxes into the box to be shipped.