WILL GIVE BRAINLIEST AND 35 POINTS! A submarine is diving toward the bottom of the ocean.
The depth of the submarine, DDD, in feet below sea level, after ttt minutes have elapsed is given by the function D(t)=20+16tD(t)=20+16tD, left parenthesis, t, right parenthesis, equals, 20, plus, 16, t.
The pressure, PPP, in pounds per square inch, exerted on the submarine at a depth of xxx feet is given by the function P(x)=14.7+0.445xP(x)=14.7+0.445xP, left parenthesis, x, right parenthesis, equal, 14, point, 7, plus, 0, point, 445, x.
Find an explicit expression that models the pressure exerted on the submarine as a function of the elapsed time, ttt, in minutes.
(Khan Academy Precalculus)