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)

answer: what

step-by-step explanation:

geometric series converge the common ratio r has magnitude less than one.

which is equivalent to

for the example we need

|2-x| < 1

-1 < 2-x   and 2-x < 1

x < 3 and x > 1

we can write that

answer: 1 < x < 3

1a. common ratio r=250/25=10 > 1     diverges

1b.   r=50/100=1/2 converges

when these converge they converge to

where a is the first term.

answer: 200

1c. r=-1   so it's not the case that |r| < 1.     diverges

2a. x is the common ratio so we converge when |x|< 1

2b.   r=-10x / -2 = 5x.

we converge when

|5x| < 1

|x| < 1/5

2c.   r=3-2x

-1 < 3-2x and 3-2x < 1

-4 < -2x and 2 < 2x

x < 2 and 1 < x

1 < x < 2

2d. [/tex] r=-48x^3/12 = 4x^3[/tex]

|4x^3| < 1

|x^3| < \frac 1 4

|x| < 4^{-1/3}

c

step-by-step explanation:

answer: x=60