Answer:
Notation. The inverse of the function f is denoted by f -1 (if your browser doesn't support superscripts, that is looks like f with an exponent of -1) and is pronounced "f inverse". Although the inverse of a function looks like you're raising the function to the -1 power, it isn't.
Step-by-step explanation:
The answer is 4/9 that is the answer hahahahah
He needs 138 bars to feed them.if he bought 14 packs of 10 granula bars he would have 140 thus 2 will be left. so the answer is A