Larger integer: \( 9 \)
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- Expand: \( x^2 + x^2 + 2x + 1 = 145 \) → \( 2x^2 + 2x + 1 = 145 \)
- Subtract 145: \( 2x^2 + 2x - 144 = 0 \) → divide by 2: \( x^2 + x - 72 = 0 \)
- Factor: \( (x + 9)(x - 8) = 0 \) → \( x = 8 \)
- A company’s revenue increased by 20% in the first year and decreased by 10% in the second year. If the original revenue was $100,000, what is the final revenue?
- After first year: \( 100,000 \times 1.20 = 120,000 \)
- After second year: \( 120,000 \times 0.90 = 108,000 \)
