Question

world oil reserves are currently estimated to be 600 billion units. if this quandtity is reduced by 8% a yearm after how many years will oil reserves drop below 100 billion units?

Answer 1

so what is the question asking nader1? what do you already know about this question in other terms?

Answer 2

it written on the top if this quandtity is reduced by 8% a year, after how many years will oil reserves drop below 100 billion units?

Answer 3

so then what do you know about this question, like what are the numbers and what do they corrispond to?

Answer 4

it is the given it about compound intereste they thattha quantities a reduced 8% we need to find how many year that become 100billion if we start a 600billion

Answer 5

okay, so then what would you do first?

Answer 6

600(1-0.08)^1

Answer 7

or you could use a percent table, do you know how to use that? its possibly the easiest.

Answer 8

then you would just add the 0s to make them billions under the hashtag