Question

The number of internet users I in millions during year x, where x > 2000 can be approximated by the following formula

I= 118x- 235,529
Approximate the year in which there were 600 million internet users for the first time.

I came up with the year 1996 and it was incorrect for some reason

Answer 1

no,

I did it like this
600= 118x - 235,529
235,411=118x
235,411/118 = 118x/118
235,411/118= x
x = 1995

Answer 2

oh - i didn't read question through sorry

Answer 3

how did you get 235411 in 2nd line

Answer 4

I subtracted 118 from 235,529

Answer 5

no can't do that you have a number 235529 and term in 118x - you can't add/subtract unlike terms

Answer 6

ok

Answer 7

600= 118x - 235,529
add 235529 to both sides of the '=' sign:
236129 = 118x
x = 236129 / 118

Answer 8

oh ok so the answer would be 2001, right?

Answer 9

yes

Answer 10

thanks, this algebra is giving me a nervous break down, haha

Answer 11

yea - its important to remember you can only add like terms

eg x + 12x = 13x
2 + 12x = 2 + 12x: can't simplify that any further

Answer 12

practice as much as you can - your confidence will increase

Answer 13

I just dont know how people remember all these rules. I think I going to have to make me a notebook of all the rules and set down and memorize them , lol

Answer 14

yes - that will help