Following is a graph showing the temperature $P(t)$ in °C one chilly day at various times $t$ measured in hours. ($t=0$ represents midnight.)

We can use the graph to estimate values of $P(t)$ by reading them off the graph: For instance, to find $P(%2)$ (the temperature at time $%2$), click on the $t$-axis where $t = %2$, then follow the arrows vertically to the graph and then horizontally to read off the corresponing $y$-coordinate: $y = %6$. Thus,
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Temperature $\bold{P}$ (°C) |

$P(%2) = %6. \qquad$ When $t = %2, P(t) = %6$. %7

Following is a graph showing the temperature $P(t)$ in °C one chilly day at various times $t$ measured in hours. ($t=0$ represents midnight.)

$P(%0)$ = BOX
$P(%1)$ = BOX

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Following is a graph showing the temperature $P(t)$ in °C one chilly day at various times $t$ measured in hours. ($t=0$ represents midnight.)

$P(%4)$ = BOX
$P(%0) - P(%1)$ = BOX

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These results tell you that (check all correct answers)) MULTIPLECHOICE

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