The​ function, ​p(d)equals=1plus+startfraction d over 33 endfraction d 33​, gives the​ pressure, in atmospheres​ (atm), at a depth d in the sea​ (d is in​ feet). note that ​p(0)equals=1 ​atm, ​p(33)equals=​2, and so on. find the pressure at 50 feet.