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.
Pretty sure that it is 9/7.
50 degrees is one while the other two are 130 degrees
We use rulers obviously because the length of rulers are about 4 more times longer than hands. Hope this helps you :]
Answer:
Function
Step-by-step explanation:
Put a vertical line through every point.
If the line goes through another point, then it is not a function.
This method is called the Vertical Line Test or VLT
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-Chetan K