Bill and abhasra are selling pies for a school fundraiser. customers can buy blueberry pies and black berry pies. bill sold 12 blueberry pies and 9 blackberry pies for a total of $324. abhasra sold 6 blueberry pies and 12 blackberry pies for a total of $312. what is the cost each of one blueberry pie and one blackberry pie?

What is the slope simplify your answer and write it as a proper fraction, improper fraction, or integer

Aheated piece of metal cools according to the function c(x) = (.5)x ? 7, where x is measured in hours. a device is added that aids in cooling according to the function h(x) = ? x ? 2. what will be the temperature of the metal after two hours?

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297