State whether the given problem is arithmetic, geometric, harmonic or Fibonacci
sequence. Then give the formula that would best solve the problem.

1) A theater has 25 seats in the first row. There are 30 rows in all. Each successive row
contains two additional seats. How many seats are there in the theater?

2) The student government of Dumaguete City National High School held a paper
collection.

3) Diasy received a 15% salary increase at the end of each year for the last 8 years. If her
starting monthly salary was P9,000, how much is her current monthly earnings?

4) Greg drove from Dumaguete city to tanjay Negros Oriental at 70 km per hour, from Tanjay Negros Oriental to Bindoy Negros Oriental at 85 km per hour, and back to the starting point at 100 km per hour. What is the average rate for the entire trip?

5)A community has a population of 25 000 which increases by 15% every year. What will be the population of the community after 6 years?​