What is a ratio called with two equivalent measurements?

Is a currency whose value is tied to another currency, meaning that the exchange is fixed

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.)

Solve each quadratic equation by factoring and using the zero product property. x^2 - 8x + 30 = 3x