If the Scale Factor from Triangle A to Triangle B is 2/7, is triangle B bigger or smaller than Triangle A? - and it would be very helpful if someone can help explain! i have a lot more of these..

Solve : (show your work) 10-3x> -23

Apublic library wants to place 4 magazines and 9 books on each display shelf. the expression 4s+9s represents the total number of items that will be displayed on s shelves. simplify the expression

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?