Approximately how many times greater is 2.3 x 10 (with 4 as exponent) than 1.15 x 10 (with 8 as exponent)?

a. 115

b.200

c. 11,500

d. 20,200

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answer: 2530

hope this

the 8 in 8,420 is in the thousands place so it's value is 8 thousand.

the 8 in 6,870 is in the hundreds place so it's value is 8 hundred.

divide 8000 by 800 to find the answer:

8000 / 800 = 10

the 8 in 8,420 is 10 times greater than the 8 in 6,870