Match the temperatures with the times.

Step 1: Average rate of temperature change from 2:00 a.m. to 11:00 a.m.

Formula:
$\text{Average rate} = \frac{\Delta T}{\Delta t}$

$T_{2:00~\rm a.m.} = -4^\circ \rm C$
$T_{11:00~\rm a.m.} = 14^\circ \rm C$
$\Delta T = 14^\circ \rm C - (-4^\circ \rm C) = 18^\circ \rm C$

$\Delta t = 11:00~\rm a.m. - 2:00~\rm a.m. = 9~\rm h$

$\text{Average rate} = \frac{18^\circ \rm C}{9~\rm h} = 2^\circ \rm C/\rm h$

2^\circ C/h

Step 2: Average rate of temperature change from 11:00 a.m. to 2:00 p.m.

Formula:
$\text{Average rate} = \frac{\Delta T}{\Delta t}$

$T_{11:00~\rm a.m.} = 14^\circ \rm C$
$T_{2:00~\rm p.m.} = -2^\circ \rm C$
$\Delta T = -2^\circ \rm C - 14^\circ \rm C = -16^\circ \rm C$

$\Delta t = 2:00~\rm p.m. - 11:00~\rm a.m. = 3~\rm h$

$\text{Average rate} = \frac{-16^\circ \rm C}{3~\rm h} = -\frac{16}{3}^\circ \rm C/\rm h \approx -5.33^\circ \rm C/\rm h$

-\frac{16{3}^\circ C/h}

Step 3: Average rate of temperature change from 2:00 a.m. to 2:00 p.m.

Formula:
$\text{Average rate} = \frac{\Delta T}{\Delta t}$

$T_{2:00~\rm a.m.} = -4^\circ \rm