Which of the following can be used to find the sum of the interior angles for any regular polygon?

a. add 1 to the number of sides and multiply the sum by 180
b. divide the number of sides by 180
c. subtract 2 from the number of sides and multiply the difference by 180
d. multiply the number of sides by 180

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?

The diagram shows corresponding lengths in two similar figures. find the area of the smaller figure. a. 14.4 yd2 b. 24 yd2 c. 26.4 yd2 d. 28

Need solving this 2nd limit problem.