Question

algebra help please will fan and give best answer to fastest and most accurate answer :-)

Stephanie is organizing the seating arrangements for a concert in her local park. The first row's seats are modeled by the function f(x) = 15. To give everyone a good view, each row must have four more seats than the row before it. The number of additional seats a row has is modeled by the function s(x) = 4(x - 1).

Explain to Stephanie how to create an equation to predict the number of seats in any row. Describe how to determine the number of seats in the fortieth row. Use complete sentences.

Answer 1

@ganeshie8 @amistre64 @Shay17 @jacob4900

Answer 2

@Hero

Answer 3

@jim_thompson5910 please anyone help me

Answer 4

hold on let me solve it.

Answer 5

thank you @jacob4900

Answer 6

no problem. i just hope that i can solve it because i haven't studied this in a while

Answer 7

Row 1 = 15
Row 2 = 15 + 4 = 19
Row 3 = 15 + 4 + 4 = 23
Row 4 = 15 + 4 + 4 + 4 = 27
Row 5 = 15 + 4 + 4 + 4 + 4 = 31
Row n = `15 + 4(n - 1)`

Answer 8

Or better yet:

Row 1 = 15
Row 2 = 15 + 4(1) = 19
Row 3 = 15 + 4(2) = 23
Row 4 = 15 + 4(3) = 27
Row 5 = 15 + 4(4) = 31
Row n = 15 + 4(n - 1)

Answer 9

Now find the number of seats in Row 40

Answer 10

11 +4x where x is row number
For fortieth row...171 seats

Answer 11

ok @hero so n=15+4(40-1)
n=15+4(39)
n=15+156
n=171 like @tanmaykhandait said

Answer 12

did i do that right?

Answer 13

@tanmaykhandait just simplified what I already wrote:

15 + 4(n - 1) = 15 + 4n - 4
= 15 - 4 + 4n
= 11 + 4n

Answer 14

okay i understand so did i do it correctly?

Answer 15

I used n instead of x because n is usually used for these kinds of problems

Answer 16

i understand and im awrding best answer but can you help me with a few more?

Answer 17

But really it simplifies to just f(x) + s(x)