Question

Add 7.3×107+1.8×107 . Which is the correct sum?(1 point)
Responses

9.1+107
9.1 plus 10 superscript 7 baseline

8.1×107
8.1 times 10 superscript 7 baseline

9.1×107
9.1 times 10 superscript 7 baseline

9.1×1014