Express the number in our numeration system.

first one

step-by-step explanation:

a) 0.25x times 3. (could be wrong on equation.)

b) 2.25 pound of dark chocolate. (can i eat all the chocolate? plz? anyway, again, could be wrong, but i hope im right. all the chocolate together should be 5.25 pounds)

have a good day!

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.