What challenges did the divers and other team members face during the rescue mission? What challenges did the Wild Boar face within the cave?

How were computers in the 1950s and 1960s different from computers of today? they were much smaller. they were much faster. they cost less money they were bigger and slower.

Find the center and the radius of the circle with the equation: x^-2x+y^2+4y+1=0

Which type of appeal does president lincoln use in these lines to try to persuade southerners