Assume the annual number of skin cancer deaths increases geometrically, instead of arithmetically. Use the same starting number of 9,300 in 2000 and 200,000 in 2050. Select the number closest to the ratio of number of deaths from year to year.

Answer 1

fifty years?
P(50)=P(0)a^50
200000=9300*a^50
take log of both sides
log(200,000)=log(9300)+50log(a)
50log(a)=log(200,000)-log(9300) =log(200,000/9300)=1.333
log(a)= 0.0266509409
a= 10^ 0.0266509409=1.064
checkP(50)=9300(1.064)^50=206806.577