Jennifer figures that she uses 2 pens per month. She started the year with 10 pens. How do I write the equation that represents the number of pens, y, she will have after x months.

y = 10 - 2x

To write the equation that represents the number of pens Jennifer will have after x months, you need to consider the information given.

Jennifer figures that she uses 2 pens per month. This means that after x months, she would have used a total of 2x pens.

She started the year with 10 pens, so the initial number of pens, y, is 10.

To find the total number of pens Jennifer will have after x months, you need to take into account the number of pens she started with (10) and the number of pens she has used (2x).

Therefore, the equation that represents the number of pens Jennifer will have after x months is:

y = 10 - 2x

In this equation, y represents the number of pens she will have, and x represents the number of months that have passed.