John earns $11 an hour plus a 10% commission on every sale he makes. In one week, he worked 40 hours and made $1,300 in sales. What was his total paycheck for one week?

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?

For what value of (y) is 3^3/3^y =1/9

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