Question

The U.S. national debt was $2.9617×1013
in 2021 and $3.98×1011
in 1971. Find how much the debt increased in the 50-year period. (1 point)
Responses

$1.0183×1024

1.0183 dollars times 10 superscript 24 baseline

$2.9219×1011

2.9219 dollars times 10 superscript 11 baseline

$3.0015×1013

3.0015 dollars times 10 superscript 13 baseline

$2.9219×1013

2.9219 dollars times 10 superscript 13 baseline
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Answer 1

Compute 2.9617×10^13 − 3.98×10^11.
3.98×10^11 = 0.0398×10^13, so the difference is (2.9617 − 0.0398)×10^13 = 2.9219×10^13.

Answer: 2.9219×10^13.