The owner of a restaurant wants to evaluate the sales of a new menu item by studying three different questions. Choose the type of research design that would be best answer each question

Find three consecutive numbers such that the sum of one-fourth the first and one-fifth the second is five less than one-seventh the third

Suppose i pick a jelly bean at random from a box containing one red and eleven blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)

I’m confused on how to work the pie charts