Bart owns a neighborhood kwik-e-mart. at the end of the day on wednesday he counted total receipts in his story of $8399.70. if the sales tax is on food items is 2%, how much merchandise mart sale on wednesday? how much sales tax did he collect

What is the expression in factored form? -x^2 + 3x + 28 a. (x-7)(x-4) b. -(x-7)(x+4) c. (x+4)(x+7) d. -(x-4)(x+7)

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

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