A submarine is descending to examine the sea floor 2,10 feet below surface. It takes the submarine 2 hours to make this descent. Write an equation to represent the relationship between the submarines elevation and time.

Y=kx

Peaches cost $4.29 per pound. find the cost of two and a quarter pounds of peaches.

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

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)