A theater has 37 seats in the first row, 41 seats in the second row, 45 seats in the third row and so on. write the general term for a sequence (an) that give the number of seats in row n.

Question

raden · Answer

this is a arithmatic series with the first term is 37, 2nd 41, ...
therefore use formula :
---------------
an = a1 + (n-1)d
---------------
with : a1 = the first term
d = different the 2nd and 1st term (41-37=4)
so, just put a1= 37 and d=4 into that formula

anonymous · Answer

ok, and the question also asks how many seats are in row 17, I got 101 is that correct

raden · Answer

a17 = a1 + (17-1)*4
a17 = 37 + 16*4
a17 = 37 + 64
a17 = 101
u are correct

anonymous · Answer

ok. thank you very much

raden · Answer

welcome