Create a mathematical model for the pressure variation as a function of position and time for a sound wave, given that the wavelength of the wave is

$=0\mathrm{.}155$ m

and the maximum pressure variation is

$$Pmax $=0\mathrm{.}215$ N$/$m$2.$

Assume the sound wave is sinusoidal. $($Assume the speed of sound is $343$ m$/$s$.$ Use the following as necessary: x and t$.$ Assume $$P is in Pa and x and t are in m and s$,$ respectively. Do not include units in your answer.$)$

$$P $=$

Pa