1. **State the problem:** We need to find the healthcare cost per person in the U.S. in 2019 given the total cost and population. 2. **Given data:** - Total healthcare cost = 4 trillion dollars = $4 \times 10^{12}$ dollars - Population = 350 million people = $3.5 \times 10^{8}$ people 3. **Formula:** \[ \text{Cost per person} = \frac{\text{Total cost}}{\text{Population}} \] 4. **Calculate cost per person:** \[ \frac{4 \times 10^{12}}{3.5 \times 10^{8}} = \frac{4}{3.5} \times \frac{10^{12}}{10^{8}} = \frac{4}{3.5} \times 10^{12-8} = \frac{4}{3.5} \times 10^{4} \] 5. **Simplify the fraction:** \[ \frac{4}{3.5} = \frac{4 \times 10}{3.5 \times 10} = \frac{40}{35} = \frac{\cancel{40}}{\cancel{35}} = \frac{8}{7} \approx 1.142857 \] 6. **Final cost per person:** \[ 1.142857 \times 10^{4} = 1.14 \times 10^{4} \text{ dollars} \] **Answer:** The healthcare cost per person in 2019 was approximately $1.14 \times 10^{4}$ dollars.