You just inherited $15000. You are willing to invest up to the entire amount. The plan is to invest some of it in a bond fund that yields 5% per year and the rest of the invested amount in a stock fund that yields 8% per year. You want at least $900 in investment income per year. Let b be the amount you invest in the bond fund and let s be the amount that you invest in the stock fund. Is 
in the solution set of this system of inequalities?
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