A group of adults and students went on a class trip to Washington, DC. The number of male students was 1 more than 7 times the n
umber of adults. The number of female students was half the number of male students. If the total number of people who went on the trip is 82, find the numbers of male students and female students.
There were A adults, Sm male students, and Sf female students. <span> </span> <span>Sm = 1 + 7A </span> <span>Sf = Sm/2 </span> <span>A + Sm + Sf = 82 </span>
C. Upward; downward. As the hot rock rises, cooler rock flows downward to take its place next to the core, where it is heated and becomes buoyant enough to rise again later
