Need with 1 & 2 , will mark brainliest

Step-by-step explanation:

We assume the account holder makes the minimum payment in each case. The balance used for interest computations will be the old balance less the minimum payment. The computed value of interest will be added to that to get the new balance.

... new balance = (old balance - minimum payment) × (1 + monthly interest rate)

1. new balance = ($875.45 -25.00) × (1 + 0.024) = $870.86

2. new balance = ($89.80 -15.00) × (1 + 0.019) = $76.22

Comment on adding interest

When computing with added or subtracted percentages (added interest, added tip, discount, added tax), you often have a computation of the form

... (base amount) + (base amount) × (percentage)

The distributive property lets you factor (base amount) from both these terms, so the computation reduces to ...

... (base amount) × (1 + percentage)

Comment on percentage

Of course you recognize that "%" means the same as "/100", so that, for example, 2.4% = 2.4/100 = 24/1000 = 0.024. (twenty-four thousandths) Then, the number (1 + 2.4%) is the same as 1.024.

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step-by-step explanation:

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step-by-step explanation: