Answer:

Step-by-step explanation:


cross out the common factor.

Answer:
according to me the ans is 3.
Step-by-step explanation:
a) The 3rd row has 37 seats, the 4th row has 45 seats and the 5th row has 53 seats.
b) This is an arithmetic sequence because the values differ by a constant quantity.
c) You need to find the nth term of the sequence:
21 = 1×8+x
x=13
So the nth term is 8x +13.
The 100th term would be 813.
Answer: go to google and use a calculater
Step-by-step explanation: