I need a brief explanation on how to do this. (Rational exponents)

1. what is the formula for finding the vertical distance between two points on a coordinate plane?

Question 5 spring semester final exam math evaluate

Aflower has 26 chromosomes. to create a new flower, how many chromosomes would a sperm cell have? what is this process called? part 2: within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as it grows, have? what is this process called?