The cost of a newsletter subscription is $20 per year. The cost is expected to increase 10% each year. Which expression can be used to find the cost n years from now? What will the expected cost be at the end of 3 years?

Every year the newspaper subscription will increase 10%.

After 1 year the cost of the subsrciption will be : 20$ + 10% of 20$

20$ + (10/100) * 20$=20$ + 2$=22$

After 2 years teh cost will be: 20$ + 10% of 20$ + 10% of 20$=20$+2 * (10% of 20$) ...

According to this after n years from now the cost will be:

20$+n * (0.01*20$) = 20+n*2

Using this equation after 3 years the cost will be: 20+3*2=26 $