A submarine is diving toward the bottom of the ocean. The depth of the submarine, D, in feet below sea level, after t minutes have elapsed is given by the function D(t) 20+16t. The pressure, P, in pounds per square inch, exerted on the submarine at a depth of z feet is given by the function P(z) 14.7+0.445r Find an explicit expression that models the pressure exerted on the submarine as a function of the elapsed time, t, in minutes.

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Step-by-step explanation:

The function gives the depth as a function of time, and gives the pressured exerted as a function of depth; therefore, the pressure exerted as a function of time will be modeled by the function or

Since ,

Therefore,

P(t) = 23.6 + 7.12t

Step-by-step explanation:

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step-by-step explanation:

10.416 m/s

step-by-step explantion:

distance=100m

time= 9.6s

average speed=100/9.6

=10.416 m/s