A trucking company transports goods between two cities that are 960 miles apart. The company​ charges, for each​ pound, $0.55 per mile for the first 100​ miles, $0.40 per mile for the next 300​ miles, $0.30 per mile for the next 400​ miles, and no charge for the remaining 160 miles.

Three times the sum of a number and seven is negative thirty-six. what is the number?

How do you create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1?

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