An obstacle course for an endurance competition is set up such that only 50% of the competitors who start the race do not make it past the first obstacle. of those who do, 65% make it past the second obstacle. the final obstacle is the toughest and only one third of those who complete the second obstacle are able to get past the third obstacle and finish the race. if 13 people finish the race, how many contestants started the race? 60 66 90 120 144

Someone answer this asap for gabriella uses the current exchange rate to write the function, h(x), where x is the number of u. s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a. gabriella averages 7.5 u. s. dollars for every 100 euros. b. gabriella averages 100 u. s. dollars for every 25 euros. c. gabriella can exchange 75 u. s. dollars for 100 euros. d. gabriella can exchange 100 u. s. dollars for 75 euros.