Each course at mt. regis college is worth either 3 or 4 credits. the members of the men’s swim team are taking a total of 48 courses that are worth a total of 155 credits. how many 3-credit courses and how many 4-credit courses are being taken

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?

How many grams the dog will eat in 3 days?

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.