2 Select the correct answer.
An audiometer is a machine that tests a person's hearing by producing tones across the speech spectrum. During a hearing test, an
audiometer produces a pure tone with a frequency of 2.000 hertz (cycles/second).
The given function represents the change in pressure, plt), in millipascals, relative to the normal air pressure in the room as a function of
time, t in seconds. after the pure tone is produced.
plt) = 2sin(4,000xt)
What is the change in air pressure when the pure tone is produced?
A
1 millipascals
B.
2 millipascals
c. O millipascals
D.
-2 millipascals
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see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)

n=1.75+1.75

step-by-step explanation:

3.5/2=1.75