Zeros do not count as a sigfig so when you do something like this problem just include the numbers until you hit your significant figure limit and then substitute zeros where you can. 20000
I think its 32 minus 16 which is 16, dont forget to label!
The change in value over 4 years is
$22,000 - 30,000 = -$8,000
so the average change in value per year is
-8000/4 = -2000
Evaluating a function means to plug the required value, substituting every x occurrence with that value.
So, you have
