What is the circumference and area of a 6 meter circle

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

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?

Over which interval is the graph of f(x) = x2 + 5x + 6 increasing?