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Exercises: Identify if the given situation illustrates an arithmetic sequence or not.
1.Cruz's family offers a starting monthly salary of a "Yaya" Php2,500 with an agreement of Php100
increase every month.
2.Our country is experiencing runaway inflation, the cost of rice increased by Php1 each month. Today, a
kilo of Ganador rice costs Php65.
3.A stack of soap boxes has 12 boxes in the bottom row, 11 boxes in the second row and 10 in the next
row, and so on.
4.During an initial phase of an outbreak of measles, the number of infections can grow rapidly. If there
were 4, 8, and 16 infected persons on the first three days of an outbreak of Measles and counting, how
many will be infected on the 6th day?
GUIDE QUESTIONS:
1. Which of the situation above illustrates an arithmetic sequence? Why?
2. If it shows an arithmetic sequence what is its common difference?
3. How do we find the next term in the arithmetic sequence.