Find the slope of a line passing though the given points (1,4) (3,2)

How do i multiply two digit numbers

Ineed someone to me answer my question i have to have this done and knocked out

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?