ANSWER
A swimming pool charges $5 for every family and extra $3 for each member of the family. If your family goes to this swimming pool and is charged a total of $8, how many people are in your family?
EXPLANATION
We can say that 'm' represents an amount of something. Let's say it's the number of people that go to a swimming pool on a Tuesday. The number multiplying would be the cost of each ticket to enter the pool, that's $3.
For now we have that this place charges $3 per person to enter. We can say that the other number is the fee for a family that goes together: the pool charges $5 for the group plus extra $3 for each person of the family.
8 would be the total amount a family paid for going to the swimming pool, so what we should find out is how many people are in the family.
