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KATRIN_1 [288]
4 years ago
12

Harriet is comparing the costs of calling cards. to use card a, the cost is $1.00 to connect and then $0.04 per minute. to use c

ard b, it costs $0.65 to connect and then $0.06 per minute. for what number of minutes does it cost the same amount to use each card for a single call? (enter only the number.)
Mathematics
1 answer:
Charra [1.4K]4 years ago
3 0

1 + 0.04x = 0 .65 + 0.06x
Solve that.
You get 50 min
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Answer:

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Step-by-step explanation:

Let x be the number of hours worked then the function will be

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Now range of the function is the set of all possible output values

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f(11)=  12 *11= $ 132

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f(14)=  12 *14= $ 168

f(15)=  12 *15= $ 180

f(16)=  12 *16= $ 192

f(17)=  12 *17= $ 204

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f(21)=  12 *21= $ 252

f(22)=  12 *22= $ 264

f(23)=  12 *23= $ 276

f(24)=  12 *24= $ 288

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Range = { $ 120, $ 132,  $ 144,$ 156 ,$ 168, $ 180, $ 192, $ 204, $ 216, $ 228,        $ 240, $ 252, $ 264, $ 276, $ 288, $ 300}

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