Question

12. (03.02 LC)Koby paid a total of $3,310.00, including principal and interest, over a 15-month period to pay off his credit card. Choose the equation that could be used to solve how much, on average, Koby paid inaddition to the $154.00 average minimum monthly payment. (1 point)(154 + x)15 = 3,310O 154x + 15 - 3,31015x + 154 = 3,310O 172(15 + x) = 3,310

Answer 1

SOLUTION

From the question,

Let the principal that Koby paid every month for the 15 months be x

Then what she paid every month is

$\begin{gathered} x+\text{ interest } \\ So\text{ we are told interest is 154.00} \\ So,\text{ we have } \\ x+154.00 \end{gathered}$

So for 15 months, to get what she pays, we multiply the above by 15. We have

$\begin{gathered} 15\times(x+154.00) \\ =15(x+154.00) \\ Or\text{ } \\ (154+x)15 \end{gathered}$

So, this should be equal to $3,310.00.

Hence the equation becomes

$(154+x)15=3,310$

The first option is the correct answer