10. CAMPING The entrance fee to the national park is $15. A campsite fee is $15 per night. The total cost y for a camping trip for a nights can be represented by the equation y = 15x + 15. a. Graph the equation. b. Use the graph to find the total cost for 4 nights. c. Interpret the slope and the y-intercept.​

Simplify. show your work. ( 6x-2 ) ^2 ( 0.5x )^4

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

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