The number of students in the book club is increasing at a rate of 15% per year. in 2010 there were 9 students in the book club. find the number of students expected to be in the club in the year 2020. i just need figuring out the equation.

N~[9*1,15^(2020-2010)]= [36,41]=36

I think the equation for this would be 9+1.35x
then i think you would have to round it after because you cant really have a third of someone.

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

$18.25 ($365 divided by 20)