Answer:
1
Step-by-step explanation:
-3x+9=3(2x+3)+3(x-4)+1
Distributive property in the parenthesis
-3x+9=6x+9+3x-12+1
Combine Like Terms
-3x+9=9x-2
Get the x’s on one side
-3x+9=9x-2
+3. +2 +3. +2
11=11x
Divide by 11 on both sides
11/11=1
Answer:
The domain is -2 to positive 2.
tan ∅ and cot ∅
tan ∅ is undefined for ∅ = 
and since cot ∅ = 1/ tan ∅ then cot ∅ is also undefined for ∅ = 