Question 14 a certain drug is made from only two ingredients: compound a and compound b. there are 3 milliliters of compound a used for every 4 milliliters of compound b. if a chemist wants to make 497 milliliters of the drug, how many milliliters of compound b are needed?

The evening newspaper is delivered at a random time between 5: 30 and 6: 30 pm. dinner is at a random time between 6: 00 and 7: 00 pm. each spinner is spun 30 times and the newspaper arrived 19 times before dinner. determine the experimental probability of the newspaper arriving before dinner.