16a+5=21a (plz show work)

A(t)=728(1+0.04)^t how much money did aditya originally invest

Find the area of the regular hexagon if a side is 20 cm.

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?