Ascientist is studying certain germs. she places 3 germs in a special solution that will the germs grow. the number of germs doubles every hour. how many germs will there be after 8 hours?

Onnie is considering doing some long term investing with money that she inherited. she would like to have $50,000 at the end of 30 years. approximately how much money would lonnie need to put into an account earning 6% interest compounded annually in order to meet her goal?