Answer:
B
Step-by-step explanation:
The mass of an adult North Pacific right whale is about 70,000 kg, or 7 * 10^4 kg. The mass of a male African elephant is about 7000 kg, or about 7 * 10^3 kg. About how many times more massive is the right whale than the African elephant?
We are given that the whale's weight is 7 * 10^4, and the elephant's weight is 7 * 10^3.
Set how much bigger the whale is than the elephant as x. So,
7 * 10^4 = 7 * 10^3 *x
If we divide the first number (7) by 7, we get that
1 * 10^4 = 1 * 10^3 * x
Divide both sides by 10^3
1 * 10^1 = x
Thus, the whale is 1 * 10^1 times bigger than the elephant. The answer is B.
I hope this helps! Feel free to ask any questions!
