just plug it in and check— trust me, best trick in the book. for this one, there’s no need.
what is a term? it’s when the variable is on a constant— 3x
Answer:
Step-by-step explanation:
Given
Required
Select 3 equivalent expressions
Express 9 as 3^2
--- This is one equivalent expression
Take 
as difference of two squares
-- This is another equivalent expression:
Solving further:
becomes
-- This is another equivalent expression:
Hence, the equivalent expressions are:
Elevator 1 is 12 ft above ground level...and elevator 2 is 15 ft below ground level
Set the angles equal because they are vertical angles
150=5m
30=m (divide both sides by 5)
