Achemical engineer has tested 56 water samples. these samples make up 25% of the total number of samples that need testing. select from the drop-down menu to correctly identify the total number of water samples that need testing.

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?