The eights in which number represent 80 and 8,000?

Which shows the pre image of triangle xyz

If the endpoints of the diameter of a circle are (8, 6) and (2,0), what is the standard form equation of the circle? a) (x + 5)2 + (y + 3)2 = 18 (x + 5)2 + (y + 3)2 = 3.72 (x - 5)2 + (y - 3)2 = 18 d) (x - 5)2 + (y - 3)2 = 32

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64