Question

in the science lab will is testing the freezing point substance which should be -24°c. he is changing at a rate of -3°c per minute starting at 0°c. Write an inequality for the time t before the reaches the freezing point

Answer 1

The temperature change is -3 degree per minute and starts at 0 degree so temperature at time t is,

$0+(-3)t=0-3t$

The inequality of time before the reach of temperature -24 is,

$\begin{gathered} 0-3t>-24 \\ -3t>-24 \end{gathered}$

So answer is:

First box: -3

Second box: >

Third box: -24