A theatre has 37 seats in the first row, 39 seats in the second row, 41 seats in the third row and so on.
A. Can the number of seats in each row be modeled by and arithmetic or geometric sequence
B. Write the general term for a sequence a_n that gives the number of seats in row n.
C. How many rows are there in row 16?

Question

A theatre has 37 seats in the first row, 39 seats in the second row, 41 seats in the third row and so on.
	A. Can the number of seats in each row be modeled by and arithmetic or geometric sequence
	B. Write the general term for a sequence a_n that gives the number of seats in row n.
	C. How many rows are there in row 16?

anonymous · Answer

its can be write as arithmetic 
because the difference between 1 row and 2 row is 2

anonymous · Answer

oh ok how would I write the general term of the sequence $$a_n$$ that gives the number of seats

anonymous · Answer

in row n sorry

dumbcow · Answer

general form
$$A_n = A_1 + d(n-1)$$
d = 2 , A1 = 37
$$A_n = 37 + 2(n-1)$$

anonymous · Answer

$$a_n = 16+2(n-1)$$ this would find out how many seats are in row 16

dumbcow · Answer

what about "n"  ?

dumbcow · Answer

n represents the num of rows ..... 16th row implies n=16
$$A_{16} = 37 + 2(16-1)$$

anonymous · Answer

wow I feel stupid thanks

anonymous · Answer

39  time 15 correct would give me how many seats in row 16 right? I'm sorry I'm not good at math at all I just want to understand it.

anonymous · Answer

I got 67

dumbcow · Answer

haha ... yes its 67

anonymous · Answer

yes thank you