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gtnhenbr [62]
4 years ago
5

Which situation represents a proportional function? A. Melissa's cell phone plan charges two cents a minute plus a $10 monthly f

ee. B. Sandra's cell phone plan charges seven cents a minute. C. Holly's cell phone plan charges five cents per minute. She also receives a $5 discount each month. D. Alicia's cell phone plan charges six cents per minute plus a $5 monthly fee.
Mathematics
1 answer:
Shkiper50 [21]4 years ago
7 0

Step by step explanation

<u>let x be the number of minutes and y be the total charges per month</u>

<em>A. Melissa's cell phone plan charges two cents a minute plus a $10 monthly fee. </em>

<em>y=0.02x+10</em>

<em> </em>

<em>B. Sandra's cell phone plan charges seven cents a minute. </em>

<em>y=0.07x</em>

<em />

<em>C. Holly's cell phone plan charges five cents per minute. She also receives a $5 discount each month.</em>

<em>y=0.05x-5</em>

<em />

<em> D. Alicia's cell phone plan charges six cents per minute plus a $5 monthly fee.</em>

<em>y=0.06x+5</em>

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