Jocelyn is pregnant and needs to eat at least 500 more calories a day than usual. When buying groceries one day with a budget of $15 for the extra food, she buys bananas that have 90 calories each and chocolate granola bars that have 150calories each. The bananas cost $0.35 each and the granola bars cost $2.50 each. Let b represent the number of bananas she buys and let g represent the number of granola bars she buys. Write a system of inequalities to model this situation.

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