$2.9617 *10^13 - $3.98 * 10^11

Answer 1

First, we need to subtract the second number from the first number while keeping the same exponential format.

$2.9617 * 10^13 - $3.98 * 10^11

= $2.9617 * 10^13 - $0.398 * 10^13
= $2.5637 * 10^13

So, $2.9617 * 10^13 - $3.98 * 10^11 is approximately $2.5637 * 10^13.