Since 1979, the government has given recipients food stamps for free. Before 1979, people bought food stamps at a subsidized rate. For example, to get $1 worth of food stamps, a household paid about 15¢ (the exact amount varied by household characteristics and other factors). What is the budget constraint facing an individual if that individual may buy up to $100 per month in food stamps at 15¢ for each $1 coupon?