What is the domain of the function y=^3sqrtX?

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red