Answer:
the nth term of the sequence is 
Step-by-step explanation:
Given : An arithmetic sequence begins as follows: 
To find : Which of the following gives the definition of its nth term?
Solution :
The nth term of the A.P is 
The first term is 
The common difference is 

Substitute in the formula,



Therefore, the nth term of the sequence is 
This is the graph for that
The answer is,
= 22.5 × 2
= 90 in. squared
We have 1 m = 100cm
⇒ 72 m = 7200 cm
⇒ 7200 / 1.5= 4800 cm = 48 m
Answer: 7 rows
Step-by-step explanation:
she will have 7 rows with 4 seats in each row or 4 rows with 7 seats in each row