Question

At an elevation of 1221.4 feet, Lake Mead will hold 28,945,000 acre-feet of water. Which number is the best estimate of this amount of water?





3×10 6


2×10 7





2×10 7



3×10 7


2×10 8

Answer 1

Answer:

$3 \times 10^{7}$

Step-by-step explanation:

At an elevation of 1221.4 feet, Lake Mead will hold 28,945,000 acre-feet of water.

So, the amount of water that is in the lake will be 28,945,000 acre-feet which is estimated to be 30000000 acre-feet of water.

Therefore, the number $3 \times 10^{7}$ is the best estimate of this amount of water. (Answer)