a department store purchases logo shirts that are cost of $10 per shirt they increase the price 100% and put them on the sales floor every month that a shirt doesn't sell the store reduces the selling price by 25% after 3 months the reduction is the final shirt from the shipment of salt there is a 5% sales tax on the selling price explain the steps for finding the final cost to their customer for that shirt

Y=4x^2+x-1 solve using quadratic formula

Suppose that a households monthly water bill (in dollars) is a linear function of the amount of water the household uses (in hundreds of cubic feet, hcf). when graphed, the function gives a line with slope of 1.65. if the monthly cost for 13 hcf is $46.10 what is the monthly cost for 19 hcf?

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