Comparing 4.6×10^6 and 4.9×10^6, which number is greater?

A. 4.6 x 10^6

B. 4.6

C. 4.9

D. 4.9 x 10^6

To compare the numbers, we can ignore the exponents for now and focus on the base numbers.

4.6 is less than 4.9.

Since both numbers have the same exponent of 10^6, we can conclude that 4.6×10^6 is less than 4.9×10^6.

Therefore, the answer is D. 4.9 x 10^6.