The altitude equation modelling would take the form:
Initial Altitude - (Rate of decrease of Altitude)x
For Plane A
[tex]970-17x[/tex]For Plane B
[tex]1438-26x[/tex]b)To find the the time when two planes would be the same Altitude, we equate both expressions and find the value of x.
Shown below:
[tex]\begin{gathered} 970-17x=1438-26x \\ -17x+26x=1438-970 \\ 9x=468 \\ x=\frac{468}{9} \\ x=52 \end{gathered}[/tex]Thus, we can say that the altitude of both planes would be the same after 52 seconds!