An investment is advertised as returning 3.1% every 3 months (quarterly), compounded quarterly. if $30,000 is invested, the growth can be modeled by the equation a(t) = 30,000(1.031)^4t. what is the equivalent annual growth rate for this investment (rounded to the nearest hundredth of a percent) and what is it worth (rounded to the nearest thousand dollar) after 15 years? hint: find the value of 1.031^4 on your calculator. 12.99% and $187,000 12.47% and $173,000 7.82% and $187,000 9.37% and $43,000

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

Need solving this second acceleration problem.

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