Add 7.3×10^7+1.8×10^7 . Which is the correct sum?(1 point)
Responses
8.1×107
8.1 times 10 superscript 7 baseline
9.1×107
9.1 times 10 superscript 7 baseline
9.1×1014
9.1 times 10 superscript 14 baseline
9.1+107
1 answer
The correct sum is 9.1×10^7 (9.1 times 10 superscript 7 baseline).