A car repair will cost $250 for parts plus $95 per hour for labor. -Write a linear equation that represents the total cost in dollars of the car repair if it requires x hours of labor.

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

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

Factor and solve to find roots x squared -x - 90 =0