Michael and Valen had a bag of rainbow candies for a snack. The candies were red, orange, yellow, green, and purple. If Valen reached in the bag of candies and pulled out 3 without looking, how many different combinations of colors of candies could he have in his hand?

How can you tell when x and y are not directly proportional?

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered

The difference of three and the reciprocal of a number is equal to the quotient of 20 and the number. find the number.