You see how these 2 angles marked are both inside the 2 parallel lines?
And they are on opposite side of the transversal, the line crossing the 2 parallel lines?
These 2 angles are alternate interior angles and they are equal, I think you can do the last part by yourself.
hence, the common ratio of the given G.P. is 3 or −3.
The answer is 10.24695. Which is 10.2 for you!
Answer:18 weeks
Step-by-step explanation: