The bike store marks up the wholesale cost of all of the bikes they sell by 30%. Andre wants to buy a bike that had a wholesale price of $125.
What is the marked up retail cost of this bike? (Type your answer as a
number price without units-$) *

How to do this , and can some one explain

Which function has the domain x> -11

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?