Austin loaned his brother $20 and asked him to pay him back in 3 months. He’s going to charge him 4% interest. Austin is excited about all extra money he will make in interest. Is he correct to be so excited? Show your work to justify your answer.

$22.40 he is not correct to be so excited

C, becasuse adding a negative is still subtracting

Step-by-step explanation:

It can't be A, because subtracting a negative turns into an addition problem,

it can't be B, because they are both positive,

It can't be D, because it's just a subtraction problem,

and it can't be E, because the 4 is not negative.

I hope this helped! have a delicious day!:P