7 5/21 I think that would be the one that can cover it but not have to much left.
You might need a second opinion.
3.643 x 10^3
move the decimal in between the first and second number
However many times you move the decimal, that is you exponent.
The answer would be
<span>B)
A' (-8, 5)
B' (-8, 8)
C' (-5, 7)
D' (-4.5, 5)</span>