(a) 
= 4n + 8
(b) row 13 has 60 seats
(a)
the sequence of seats is an arithmetic sequence whose n th term is
= 
+ (n - 1 )d
where is the first term and d the common difference
here the sequence is 12, 16, ....
with = 12 and d = 16 - 12 = 4, thus
= 12 + 4( n - 1 ) = 12 + 4n - 4 = 4n + 8
(b)
calculate the number of rows n when 60 seats
solve 4n + 8 = 60 ( subtract 8 from both sides )
4n = 52 ( divide both sides by 4 )
n = 13 ← number of rows
Answer:
Mistm Demeanor I think.. Hope this helps, tell me if it's incorrect!
Step-by-step explanation:
Answer:
21 calories per cup
Step-by-step explanation:
4cups↔84calories
1cup ↔less
1/4x84=21calories
Find the difference between the two years then divide that by the first year amount.
42,365 - 40,006 = 2,359
2,359 / 40,006 = 0.0589
Multiply by 100 to get the percent:
0.0589 x 100 = 5.89%
Rounded to nearest whole percent = 6%
Answer 6%
