The rate of change of Pete's height from 3 to 5 years can be determined as,
[tex]\begin{gathered} \frac{\Delta H}{\Delta t}=\frac{H_5-H_3_{}}{5-3} \\ =\frac{45-37}{2} \\ =\frac{8}{2} \\ =4 \end{gathered}[/tex]
Thus, the required rate of change from 3 to 5 years is 4 in/year.
