Afreight carrier charges $0.57 for a package weighing up to one ounce plus and additional $0.32 for each additional ounce or fraction of an ounce. a company is shipping a package weighing 224 grams. what is the weight of the package in ounces?

Solve the system of equations. y= 2x y= x^2 - 15

You earn a 12% commission for every car you sell. how much is your commission if you sell a $23,000 car?

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