Question

An architect designs a theater with 18 seats in the first row, 22 in the second, 26 in the third, and so on. If the theater is to have a seating capacity of 1120, how many rows must the architect use in his design?

Answer 1

18+x(18+4)=1120
x=50 , i think it is 51 row

Answer 2

its not, unfortunately. I have online homework and it says its wrong. But thanks for trying!

Answer 3

18+n4+18n=1120
22n=1120
n=560

Answer 4

561 row i thinkl

Answer 5

oh wrong

Answer 6

n = 20

Answer 7

I was way off the first time

Answer 8

i will try to use pyton

Answer 9

n=20

Answer 10

i got it

Answer 11

32x+4x^2-2240=0

Answer 12

yes 20

Answer 13

yes 20 here the python code:
n=0
Y=0
y=0

while 18+n*18+y<1120:
print(18+n*18+y)
n+=1
y=Y+4*n
Y=y
else:
print(n)
print(y)
print(18+n*18+y)