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Talja [164]
3 years ago
13

jeff wants to buy a phone card for long distance calls. he can buy a 200-minute card for $10.00 or a 300-minute card for $12.00.

which card is the better value
Mathematics
2 answers:
anzhelika [568]3 years ago
6 0
300 Minute card.

It's 20 mins per $1 for the $10 plan. using the same pricing you would only get 240 mins for $12. So 300 for $12 is the better deal.
Alenkasestr [34]3 years ago
3 0
200 min / $10.00 = 20 minutes / dollar 

<span>300 min / $12.00 = 25 minutes / dollar </span>

<span>The cost of the 300 minute card is cheaper per minute and a better value. </span>

<span>If you don't expect to use more than 200 minutes then save your money and buy the smaller card.</span>
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Step-by-step explanation:

Here we are given that , the Value of

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And we need to find the prove that ,

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We know a identity as ,

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On cubing both sides of the given equation,

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Simplify and then substitute ,

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