Susie and thuy are each opening a savings account. Susie opens her account with $50 and adds $5 a week. thuy opens her account with $15 and is $12 a week. Right in equation that can be used to find the number of weeks it will take for Susie and thuy to have the same amount in their account

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