Why were sub races within the white race invented? RULES:

1. No links, I don't trust random people giving me links that I need to download.

2. I need a real answer, if the answer won't help me or your just trying to get points, don't bother answering. Any/every question I post could help someone

Ou work as a cashier for a grocery store and earn $5 per hour. you also mow lawns and earn $10 per hour. you want to earn at least $50 per week, but would like to work no more than 10 hours per week. which system of inequalities, along with y ? 0 and x ? 0, would you use to solve the real-world problem?