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Thepotemich [5.8K]
2 years ago
10

Igloos unlimited charges $150 per night with a 50% discount for every night after the third night .if you stay for days how much

will you pay?
Mathematics
1 answer:
Marina CMI [18]2 years ago
6 0

Answer:

150x,       (x<=3)

225+75x,   (x>3)

*x is the number of nights stayed.

Step-by-step explanation:

-Let the number of days stayed be x.

#If the number of days is equal to or less than 3 days, the cost is:

Cost=C_d\times Days\\\\=150x

Hence, the cost for x>3 is given by 150x

#If the number of days is greater than 3, the the cost is calculated as:

\#First \ 3 \ Days.\\Cost=C_d\times Days\\\\\\=150\times 3\\\\=450\\

\\\#Next \ number \ of \ days\\\\Cost=C_d\times Days\\\\=0.5(150)\times (x-3)\\\\=75(x-3)

We sum the two costs for x>3

\sum{Costs}=450+75(x-3)\\\\=225+75x

Hence, the cost for x>3 is given by 225+75x

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FromTheMoon [43]

Answer:

b) x=-4 is another zero of the polynomial

Step-by-step explanation:

Since you are given a set of options to choose from, a very simple way to find the zero of the polynomial is by simply plugging each  value from the options and seeing which of them gives the answer 0.

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Using all the options:

a)\,f(-3) = 2(-3)^3+(-3)^2-25(-3)+12\\f(-3) = 42\\\\b)\,f(4) = 2(4)^3+(4)^2-25(4)+12\\f(4) = 56\\\\c)\,f(-4) = 2(-4)^3+(-4)^2-25(-4)+12\\f(-4) = 0\\\\d)\,f(12) = 2(12)^3+(12)^2-25(12)+12\\f(12) = 3312

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7 0
2 years ago
The length of a rectangle is x times the square root of 100. The width is one-half y more than three-halves x. Given that the ar
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Answer:

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Step-by-step explanation:

We are give the following in the question:

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Putting values, we get,

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Answer · 1 vote

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Question

Flying against the wind, an airplane travels 4500 in 5 hours. Flying with the wind, the same plane travels 4640 in 4 hours. What is the rate of the plane in still air and what is the rate of the wind?

Answer · 0 votes

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Step-by-step explanation:

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Answer:2 and 7

Step-by-step explanation:

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