Ayelet invested $500 in starting her own hat company. She received the following predictions regarding sales in the first year: Sales (in Dollars) Probability 0 0.25 500 0.3 1000 0.25 2000 0.15 5000 0.05 what is the expected earnings in Ayelet's business? (Earnings= "Sales"- "Initial investment) a. 0$ b. 900$ c. 450$ d. -100$

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