Question

Someone help me, a bit confused
fan, medal, testimony

Answer 1

In the first row we have 10 seats, that is modeled by f(x) = 10, where x is the row number.
for each further row we must add 2 seats.

Answer 2

so... the firts row we have 10 + 0
second row: 10 + 2
third row: 10 + 4
...
nth row: ?

Answer 3

got it?

Answer 4

yeah, I get it. the equation s(x) = 2(x - 1). really confuses me ):could you help me? @M4thM1nd

Answer 5

sure, s(x) = 2(x-1) is the number of additional seats in row x

Answer 6

so we plug in 10 in the equation? s(x)= 2(10-1) ?

Answer 7

for example, for the first row (x = 1), we have s(1) = 2*(1-1) = 0
for the second row (x = 2), s(2) = 2
the third row, s(3) = 4

Answer 8

so what is the total number of seats in row x?
its T(x) = 10 + 2*(x - 1)

Answer 9

the 10 is from the first row, got it now?

Answer 10

yeah, I get it. its just trying to put it in words that's confusing me

Answer 11

@M4thM1nd

Answer 12

you can explain that in the first row you have 10 seats, then for each further row we must add 2 more seats then the previous number of seats

Answer 13

that is 10 + 2*(x - 1), where x = 1, 2, 3, ..., N