What is the domain and range of (x+9)^2-85

Domain = All real numbers

Range = All values such that y ≥ -1555.25

First, subtract 5 from both sides of the equation:

2(x-4) + 3x ≤ 12 -5

Then use distributed property for 2(x-4) and add 8 to each side of the equation:

2x - 8 + 3x ≤ 7
       2x +3x ≤ 7+8

Now we can combine both x's:
       
               5x ≤ 15

Finally, divide both sides by 5 to completely isolate x:
 
                 x ≤ 3

Hope this helps!