Apologies for the bad handwriting.
100(12 / 82) = 14.6% approximately.
The answer is

steps
#1) Try to leave a by itself by dividing any variable next to it

you can only divided these variables as all these variables in the original equation. are being multiplied. The opposite if multiplication is division.
Answer: It’s not 17.5 I can tell you that:(( just got it wrong
Step-by-step explanation:
Answer: I don’t know what options you have but I graphed it in the picture linked below