Answer:
x = 24°
Step-by-step explanation:
To find 'x', the Alternate Exterior angle postulate will need to be used.
'4x + 9' and '2x + 27' are alternate exterior angles. Therefore, they must sum up to 180.
180 = 4x + 9 + 2x + 27
Combine like terms:
180 = 6x + 36
144 = 6x
x = 24°
This transformation requires us to shift 1 unit left and 4 units down.
You can rewrite this expression as 1800 x (1/1.2)^t
Now you just simplify
= 1800(10/12)^t
= 1800 (5/6)^t
So B is your answer!