Answer:
D.
Step-by-step explanation:
I think the answer is 50 because the smallest number that rounds to 30 is 25 and twice 25 is 50
Answer:
270 km³
Step-by-step explanation:
the volume = ½×9×6×10 = 270 km³
11 - 3m = 11 - 3(2)
11-6=5
So 5 is your answer
One of the product rules for exponents was used.

Or, you can consider that the definition of an exponent and the associative and commutative properties of multiplication were used.