Solve the system by substitution.
y = 82
y = 4x + 8

Find the area of a parallelogram with base 15 yards and height 21 2/3

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

What are the domain and range of f(x)= -log5(x+2)