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sdas [7]
3 years ago
6

You decide to enroll in a plan that gives you a 10% discount if you make telephone calls 7pm – 6am. The per minute charge is $0.

10 and the sales tax is 6%. On the first month’s bill you used the phone for 130 minutes 6am – 7pm and then 400 minutes 7pm – 6am. How much was your total bill?
Mathematics
2 answers:
yanalaym [24]3 years ago
8 0
<span>If you used the phone 130 minutes from 6 am to 7 pm, that would cost $13.00. 400 minutes from 7 pm to 6 am at a 10% discount would cost you $36.00. Add totals to get $49.00. Tax at 6% is 2.94. Your total bill would be $51.94.

Total bill = (0.10+0.06) x 130 + (0.10+0.06) x 400 x 0.90
              = $ 51.94</span>
Illusion [34]3 years ago
5 0

Answer:

They are correct

Step-by-step explanation:

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Constant of proportionality,  

Step-by-step explanation:

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From the table we consider

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Answer:

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Step-by-step explanation:

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Add like terms and then add 63 to both sides of the equation:

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Pick the coefficient of the x term, divide it by 2 and square it:

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Add it to both sides of the equation:

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x-1+1=\±\sqrt{89}+1\\\\x=\±\sqrt{89}+1\\\\\\x_1=1+\sqrt{89}\\\\x_2=1-\sqrt{89}

8 0
3 years ago
A baseball cap costs $8. A matching shirt costs 4 times as much as the cap. Which of the following can be used to determine the
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