Someone plz help. ):

Abag contains 3 red marbles 4 white marbles and 5 blue marbles if one marble is drawn from the bag what is the probability that the marble will be blue

What is the average rate of change for this function for the interval from x=2 to x=4 ?

Abus travels 36 miles in 45 minutes. enter the number of miles the bus travels in 60 minutes at this rate.