Does “and “ in a math problem mean add?

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Find the equation of the line with slope =8 and passing through (6,53) write your equation in the form y=mx+b

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