Multiply the x by 4, then add 3. ( 4×

+3= 5 ). Keep doing that for the rest. Hope this helped a little. If you have any questions, you can message me if you would like.
Answer:
140,150
Step-by-step explanation:
The sum of the angles in a polygon is
180(n−3)
For a pentagon, this equals 540. Since the first 3 angles add up to 240, the remaining 2 angles must add up to 540−240=300∘
The answer is pi but to fifteen places