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.

The tiles below are pieces of a normal ecg tracing representing a little less than two heartbeats at a resting rate of 80 bpm. arrange the tiles in their correct order. rank from first to last. do not overlap any tiles.

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

10 points? ? +++ me asap gabriella uses the current exchange rate to write the function, h(x), where x is the number of u.s. dollars and h(x) is the number of euros, the european union currency. she checks the rate and finds that h(100) = 7.5. which statement best describes what h(100) = 75 signifies? a) gabriella averages 7.5 u.s. dollars for every 100 euros. b) gabriella averages 100 u.s. dollars for every 25 euros. c) gabriella can exchange 75 u.s. dollars for 100 euros. d) gabriella can exchange 100 u.s. dollars for 75 euros.