How to solve 8340divided by 1.2

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

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?