SOLUTION: Mrs.G noticed the size of her class has been declining over the yeras. When she started in 1980 she had an averege of 29 students. Now she only has 24. This is her equation. y=29-0

Algebra ->  Expressions-with-variables -> SOLUTION: Mrs.G noticed the size of her class has been declining over the yeras. When she started in 1980 she had an averege of 29 students. Now she only has 24. This is her equation. y=29-0      Log On


   

Question 273822: Mrs.G noticed the size of her class has been declining over the yeras. When she started in 1980 she had an averege of 29 students. Now she only has 24. This is her equation. y=29-0.2x ,x=number of years since 1980,y=number of students per class. Use the equation to find the averege number of students in 2020.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
from 1980 to 2020, there are 40 years
y+=+29+-+.2x
y+=+29+-+.2%2A40
y+=+29+-+8
y+=+21
Average number of students in 2020 is 21