has no antiderivative in terms of elementary functions (polynomials, exponentials, logarithms, trigonometric functions, etc), but there is a special function defined to fit that role called the error function,
, where

By the fundamental theorem of calculus, we can see that

which means we have

Might be late but the first one is 125 and the seced one is less than :)
$78.17 rounds to $78
15% of $78 = $11.70 which rounds to $12
If there are 30 Apple computers and 7 of the computers have a specialized movie editing software, then that would be 23.3333333% of the Apple computers can be used for editing movies.
7/30x100= 700/30
700/30= 23.33%