What rate of growth is modeled by this bacteria colony per hour of observation??

What is the measure of angle tvu shown in the diagram below

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?

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?