Zach and Phil are at a totem pole in Ketchikan, Alaska and read that the height is 12.5 ft tall. They want to use the mirror method to verify that this is the correct height. Phil, whose eye is 5ft above the ground, walks to a spot 14ft away from the base of the totem pole. In relation to where Phil is standing, where should they place the mirror if the height of the totem pole is exactly 12.5 ft?

15 point ! ~ see if you know the answer to both you!

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

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