Frank had b bottles of water before his friends came over. His friends drank 7 bottles of water. After his friends left, Frank went to
the store and bought 18 bottles of water. Which expression shows how many bottles of water Frank has currently?
A. b + 7 + 18
B. b - 7 + 18
C. b - (7 + 18)
D. b - 7 - 18

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Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have

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.