The polynomial

y=−0.73x4+3.1x3+26.5

describes the billions of flu virus particles in a person’s body x days after being infected. Find the number of virus particles, in billions, after 3 days.

There are billion virus particles in a person’s body 3 days after being infected.

There will be billion virus particles in a person’s body 3 days after being infected.

Step-by-step explanation:

Step 1:

The number of flu particles in a person's body in the billions is represented by y and x represents the number of days after which they have been infected.

So if we need to calculate the number of flu particles in a person's body at any instant of time we just substitute the value of x in y.

Step 2:

To calculate the number of flu virus particles in a person's body after 3 days, we must substitute in y.

So 3 days after being infected there will be billion flu virus particles in that particular person's body.

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step-by-step explanation:

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c