Answer:
First, you write an explicit formula then plug in the value of n in the formula with the term number you are trying to find, in this case the 13th term.
The steps are in the pictures
the final answer is 121 btw
Answer:
pi r squared divided by 2 for the half circle then add the area of the box to you number and there is your area
The answer for your question is x=-1
Answer: 37
Explanation: Triangles's angles add up to 180. 180-45-98 is 37