Question

Mr. Anderson has a credit card balance of - $80.23 at the end of the month. Use Mr. Anderson's credit card balance to describe a situation in which opposite
quantities combine to make 0.
Enter the correct answer in the box.
The credit card balance is $80.23. Then Mr. Anderson makes a payment of SI
so the credit card balance is now $0.

Answer 1

We want to use Mr. Anderson's balance to create a situation where opposite quantities combine to make 0.

First, for a given number A, its opposite is defined as:

(-1)*A = -A

Here we know that Mr. Anderson's balance is -$80.23

The opposite of his balance is:

-(-$80.23) = $80.23

So, if he decides to add $80.23 to his account, now the balance of the account will be:

original balance + what he adds

-$80.23 + $80.23  = $0

So he is adding the opposite of what he debts, in order to cancel the debt.

If you want to learn more, you can read.

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