I you're looking for the equation, it is

and If you need me to solve it, it is
X+9-3≤14
Add 3 to the other side. (do the inverse of subtraction)
x+9≤17
Subtract 9 on both sides. (the inverse of addition)
x≤8
I hope this helps!
~kaikers
The domain- Is the function provides an "output" or value for each member of the domain
Range- The difference between the lowest and highest values.
John spent 30 on six cars 5 times 6 = 30