the question says that the samples included 100 people each, so it's just 100 multiplied by the amount of samples:
7×100=700
Heya !
Given expression -

Subtracting 25 both sides ,

Dividing by 3 on both sides ,

Therefore ,
No because each time it goes up by (1) and in the last one it goes up (2 times) and then decreases (4 times) on the right.
Answer:
-4 and 4
Step-by-step explanation:
Have a good day.