Answer:
Step-by-step explanation:
(6x x10 ^2) (-3x x10^5)
-18 x 10^-3
The numerator and denominator need parentheses for clarity.
5.4
That's your answer because if the number is 5 or larger, you round up. Because 6 is larger than 5, it rounds up to zero and then the 3 becomes a 4.