Answer:
40
60
Step-by-step explanation:
20÷2=10
10×4=40
10×6=60
The picture is too blurry for me even when I try zooming in on it
We have equation:
t=20x+31
x is number of years after 1997.
To calculate number of laptops in 2005:
x=2005-1997
x=8
t=20*8+31
t=160+31
t=191
In year 2005 school had 191 laptops.
