Work Step by Step
Plugging in m=20 since 20 years have passed since 1990: $$ P = 219,531 + 828.7m$$ $$P = 219,531 + 828.7(20)=236,105$$
You can help us out by revising, improving and updating this answer.Update this answer
After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.