The expression -50x + 100 represents the balance, in dollars, of the bank account after x months. What is the rate of change in dollars per month, of the bank account balance?

Step-by-step explanation:

In the month the balance will be which is . In the month, the balance will be which is . In the month, the balance will be which is .

We can see that for every increase of month, the balance of the bank account will decrease by .

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