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Tracy has a cell phone plan that provides 250 free minutes each month for a flat rate of $29. For any minute of 250, Tracy is charged $0.35 per minute. Which of the following piece wise function represents charges based on Tracey's cell phone plan?

Respuesta :

choco4
Your function is:

Y= 29 + 0.35x

X represents the money that Tracy is charged per minute


Answer:

f(x) = {    29 ,                                0≤x≤250

          0.35 (x-250) + 29             250< x< ∞ }

Step-by-step explanation:

Tracy has a cell phone plan that provides 250 free minutes each month for a flat rate of $29. For any minute of 250, Tracy is charged $0.35 per minute

For first 250 minutes the flat charge is 29

LEts x be the number of minutes called

x- 250 be the minutes  to be charged

Tracy is charged $0.35 per minute

so charge = 0.35(x-250) + 29

We write piece wise function for 0 to 250 minutes and then for above 250 minutes

f(x) = {    29 ,                                0≤x≤250

          0.35 (x-250) + 29             250< x< ∞ }

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