Answer:
14r−t+8w
Step-by-step explanation:
Let's simplify step-by-step.
8w+5r−t+9r
=8w+5r+−t+9r
Combine Like Terms:
=(5r+9r)+(−t)+(8w)
=14r+−t+8w
=14r−t+8w
y = 7/5x + 7
B?
I think is B because solar power never run out.
（For the next 5000000000 years at least...）
Start with:
Combine like terms:
