A 12ft board is cut into 2 pieces so that one piece is 4 feet longer than 3 times the shorter piece.

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

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

True or false: the graph of y=f(bx) is a horizontal compression of the graph y=f(x) if b< 1