Let E=elevation range
Low elevation=1700≤E≤2500<span>
Mid elevation= 2500</span>≤E≤4000<span>
Sulbarine=4000</span>≤E≤6500<span>
Alpine=6500</span>≤E<span>≤14,410</span>
Use PEMDAS
P Parentheses first
E Exponents (ie Powers and Square Roots, etc.)
MD Multiplication and Division (left-to-right)
AS Addition and Subtraction (left-to-right)

Answer is 2( x + 2 )^2 - 5 I think
You need to add a picture in order for others to understand what you are referring to.