What is the LCM of 72 and 84

Which sentence describes why polygon mnop is congruent to polygon jklp? a. polygon jklp maps to polygon mnop through a translation. b. polygon jklp maps to polygon mnop through a rotation. c. polygon jklp maps to polygon mnop through a dilation. d. polygon jklp maps to polygon mnop through a stretch.

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

In the diagram, gef and hef are congruent. what is the value of x