# Math Help - derivatives question

1. ## derivatives question

When air expands adiabatically (without gaining or losing heat), its pressure ${P}$ and volume ${V}$ are related by the equation ${P}{{V}}^{{{1.4}}}={C}$ where ${C}$ is a constant. Suppose that at a certain instant the volume is ${340}$ cubic centimeters and the pressure is${93}$ kPa and is decreasing at a rate of${7}$ kPa/minute. At what rate in cubic centimeters per minute is the volume increasing at this instant?

_________$\frac{{\text{cm}}^{{3}}}{\min}$

2. ## Re: derivatives question

what have you done with this problem?