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A pharmacy claims that the average medication costs $32 but it could differ as much as $8. Write and solve an absolute value inequality to determine the range of medication costs at this pharmacy.

A|x − 32| ≥ 8; The medication costs range from $24 to $40

B)|x − 32| ≥ 8; The medications cost less than $24 or greater than $40.

C|x − 32| ≤ 8; The medication costs range from $24 to $40
D|x − 32| ≤8; The medications cost less than $24 or greater than $40.

Verified Answer :

SchwarzschildRadius

So,

We can tell that the most expensive medication costs $40 and the cheapest costs $24.  Thus, only options A and C are left.

To see which inequality is true, test a value, such as $30, in the equation in option C.

|30 - 32| ≤ 8
|-2| ≤ 8
2 ≤ 8

Option C is correct.

Answer:

Therefore, Option C is correct that is \(|x-32|\leq8|{\text{the medication costs range from $24to $40}\).

Step-by-step explanation:

We have given medication cost $32

Since, we have given as much as 8 so the inequality will maximum goes upto 8.

\(|x-32|\leq8\)

Now, we will solve the inequality for x we will get

We will first open the modulus function by its definition we will get

which is |x| is +x  and -x

\((x-32)\leq8\)

\(x=32+8=40\)

\(x=40\)

And \(-(x-32)\leq8\)

\(-x+32=8\)

\(x=24\)

Therefore, Option C is correct

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