What is the domain of the function $f(x)=\log_2(\log_3(\log_4(\log_5x) ))$?.

Figure abcd is a parallelogram. if point c lies on the line x = 2, what is the y-value of point c?

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?