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baherus [9]
3 years ago
9

one high speed internet provider has a $50 setup fee and costs $30 per month. another has no setup fee and costs $40 per month.

write an equation for each option. let y represent the total amount of paid and let x represent the number of month.
Mathematics
1 answer:
vlabodo [156]3 years ago
7 0

Answer:

y=30x+50 and y=40

Step-by-step explanation:


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Answer:

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Step-by-step explanation:

Given: The antibiotic  clarithromycin is eliminated from the body according to the formula:

A(t) = 500e^{-0.1386t}                 ......[1]

where;

A - Amount remaining in the body(in milligram)

t - time in hours after the drug reaches peak concentration.

Given: Amount of drug in the body is reduced to 100 milligrams.

then,

Substitute the value of A = 100 milligrams in [1] we get;

100= 500e^{-0.1386t}

Divide both sides by 500 we get;

\frac{100}{500}=\frac{ 500e^{-0.1386t}}{500}

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Taking logarithm both sides with base e, then we have;

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or

\log_e (0.2)=-0.1386t

-1.6094379124341 = -0.1386t

 [using value of \log_e (0.2) = -1.6094379124341 ]

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Therefore, the time 11.61 hours(Rounded two decimal place) will pass before the amount of drug in the body is reduced to 100 milligrams


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