Question

Paula is scuba diving. Her elevation changes by "-37" 4/5m in 4.5 minutes. What rational number represents the average change in Paula's elevation each minute

Answer 1

The average change in Paula's elevation each minute is:

`\begin{gathered} -37(4)/(5)/4.5 \\ -(189)/(5)/4.5 \\ -(189)/(5)*(1)/(4.5) \\ -(189)/(22.5) \\ -8.4 \end{gathered}`

Hence, the rational number that represents the average change is -8.4