What is the relationship between the ratios? 16/72 and 8/32 proportional not propotional

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?

Sara made $253 for 11 hours of work. at the same rate how much would he make for 7 hours of work?

How do you write 600 as a product of its prime factors (index! )