Answer:
Step-by-step explanation:
Just plug in 20 for t:

-2^6-(6)^2= -100. Hope this helps have a great day. :)
The question would help if there were a picture of the problem
however I can say that it should always add up to 180 and subtracted by the interior sum
Answer:
the answer is the first one
Step-by-step explanation:
Answer:
x = 0, y = 0
Step-by-step explanation: