If m = baseball cards he had yesterday, and today he got rid of 5, the expression is equal to
m - 5 = x.
As an example of what the answer is, replace m with 10.
If he had 10 baseball cards and gave away 5 today, x = 5.
The answer is m - 5 = x.
Answer:

Step-by-step explanation:
<h3>to understand this</h3><h3>you need to know about:</h3>
- percent
- percentage words problem
- PEMDAS
<h3>given:</h3>
- population:2500
- decreasing rate:3%
<h3>to find:</h3>
- the population after 11 years
<h3>let's solve:</h3>
according to the question
population decreases in 1 year

population will decrease in 11 years
so the population of the town after 11 years will be
2500-825
<h2>1675</h2>
Okay so 3 hours*60 minutes= 180
45 minutes?
so 180/45=4
so in three hours she has had four sessions
and in six it will be 8
in nine it will be 12
and in 12 it'll be 16
sixteen sessions
hope i am right