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.
I believe the answer is C
The answer is B. 97
3 x 27 + 2 x 8
X is equal to about 3.218876
The unknown number would be 16.
8 times 2 is 16
