I need help, i don’t understand it and my teacher didn’t explain it well. What is needed on the chart? How do i find the midpoint?

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

Acertain population of bacteria demonstrates exponential growth doubles in size every 4 days. how long will it take the population to triple in size?

Im gonna fail 7th grade selective breeding 1. creates offspring which are genetically identical to the parent 2. is the process of breeding only organisms with desirable traits 3. involves the removal of the nucleus of a cell 4. combines traits from organisms of different species