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ZX-BBDB25564A2024年11月B卷(易) · 第 3 题
2024年11月B卷(易) · 原库模块 2 · Q3 原库参考解析
The function \( f\left(x\right)=-40x+280 \) gives the predicted height above the ground \( f\left(x\right) \), in feet, of a model airplane x minutes after it begins to descend. What is the predicted height above the ground, in feet, of the model airplane 4 minutes after it begins to descend?
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