A theater in pasay city has 25 seats in the first row of it's center section. Each row behind the first gains additional 5 seats. How many seats are there on the 7th row of the center section?
1.) What kind of sequence is shown in the problem?
2.) What is asked?
3.) What formula is needed to solve the problem?
4.) What is the final answer? show the complete solution.
1.) What kind of sequence is shown in the problem?
2.) What is asked?
3.) What formula is needed to solve the problem?
4.) What is the final answer? show the complete solution.
Answers & Comments
Answer:
1. Nth term arithmetic sequence
2.How many seats are there on the 17th row of the center section
3.an=a1-(n-1)d
4.a17=25+ (17-1)5
=25+ (16)5
=25 + 80
a17 =105
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