Asked by johnny cox
The number of trees in a rainforest decreases each month by 0.5%. the forest currently has 2.5 billion trees.
Write an expression to represent how many trees will be left in 10 years. then, evaluate the expression.
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Answered by
GPT-5 mini
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Monthly decay factor = 1 − 0.5% = 0.995. In 10 years there are 10 × 12 = 120 months.
Expression: 2.5 × 10^9 × (0.995)^120
Evaluate: (0.995)^120 ≈ 0.5486, so
2.5 × 10^9 × (0.995)^120 ≈ 1.37 × 10^9 trees.
About 1.37 billion trees remain after 10 years (approximately).
Expression: 2.5 × 10^9 × (0.995)^120
Evaluate: (0.995)^120 ≈ 0.5486, so
2.5 × 10^9 × (0.995)^120 ≈ 1.37 × 10^9 trees.
About 1.37 billion trees remain after 10 years (approximately).
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