A its 10 percent because of the amount of money he has in his account <span />
Answer:
ok
Step-by-step explanation:
The correct answer is 19, not 21
You want to isolate C, so the first step would to have it be positive. You would do this by adding C to both sides of the equation to cancel the C on one of the sides out like this:

. Then you want to cancel out the P, so you subtract it on both sides like this:

And that is your answer