Question

How would I find a formula for the following problem if the town increases their current food supply to feed an additional 2 million people (using linear or exponential form)?

A town currently produces enough food to feed 12 million people, and is increasing its food
supply to feed an additional 160,000 people per year. They manage to increase its current food supply enough to feed an additional 2 million people.
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This is my guess, but I don't know if it's right...
y=b+mx
y= 12000000+(2000000+160000)x
y= 12000000+14160000x