Fidel has a rare coin worth $ 500 $500dollar sign, 500. Each decade, the coin's value increases by 20 % 20%20, percent. Which graph shows the coin's value y yy (in dollars) after x xx decades?

20% rise each 10 years =

500 x 1.20 = $600  yr 10  or decade 1

600 x 1.20 = $720  yr 20  or decade 2

720 x 1.20 = $864  yr 30 or decade 3

864 x 1.20 = $1036.80  yr 40 or decade 4

1036.8 x 1.20 = $1244.16 yr 50 or decade 5

1244.16 x 1.20 = $1492.992 yr 60 or decade 6

Step-by-step explanation:

If the correct graph goes up more than 60 years just use last answer and multiply by 20%

Any problems just uploaded graph and cut to size.

b is the right answer