Who wants to talk come on i don't bite

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Sum is 17 and their difference is 3

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?