1. **State the problem:**
Calculate the expected value of the spinner game where the wheel has 10 equal regions: 3 red, 4 blue, 2 yellow, and 1 green.
2. **Formula for expected value:**
$$E(X) = \sum (\text{probability of outcome} \times \text{value of outcome})$$
3. **Calculate probabilities:**
- Probability(red) = $\frac{3}{10}$
- Probability(blue) = $\frac{4}{10}$
- Probability(yellow) = $\frac{2}{10}$
- Probability(green) = $\frac{1}{10}$
4. **Values for each color:**
- Red: +4
- Green: +2
- Blue: -3
- Yellow: -1
5. **Calculate expected value:**
$$E(X) = \frac{3}{10} \times 4 + \frac{4}{10} \times (-3) + \frac{2}{10} \times (-1) + \frac{1}{10} \times 2$$
6. **Simplify step-by-step:**
$$E(X) = \frac{3}{10} \times 4 + \frac{4}{10} \times (-3) + \frac{2}{10} \times (-1) + \frac{1}{10} \times 2$$
$$= \frac{12}{10} - \frac{12}{10} - \frac{2}{10} + \frac{2}{10}$$
7. **Cancel terms:**
$$= \cancel{\frac{12}{10}} - \cancel{\frac{12}{10}} - \frac{2}{10} + \frac{2}{10}$$
$$= 0$$
8. **Interpretation:**
The expected value is $0$, meaning on average, the player neither wins nor loses money per game.
9. **Answer to part b:**
Since the expected value per game is $0$, over 10 games the player can expect to break even.
**Final answers:**
- a. Expected value = $0.00$
- b. Answer: C. Over 10 games, the player can expect to break even.
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