The answer's 2.2
I'm sorry I can't show you, but LaTex doesn't allow you to show short division.
You can find out how to do it here, on Wikipedia's page. https://www.wikiwand.com/en/Short_division
A40=a1 +(40-1)r
in this case r is 3 beceause -2+3 will be 1 etc
a40=-2 +39*3
It is decreasing, since the y-value is going down.
Solve x by simplifying both sides of the equation & then isolating the variable x=-4 & the negative comes in from the -12
