I think it is 5/6, but I am not very confident with the answer I have given.
I'm pretty sure its 84
equation for line b is y = (1/2)x+1
CD for that question was 30, in this its 38
Oh my bad. I'm really sorry for making you think you were wrong.
Thank you for your efforts and response, but the answer is wrong
Wow! Thank you for answering very fast.