The following data table represents the total cost of a monthly cell phone bill as a function of the number of minutes that the phone is used each month.

Minutes 500 750 1,000 1,250 1,500

Total Monthly Cost (in dollars) $62 $77 $92 $107 $122

Choose the correct linear model that represents the total monthly cost as a function of time.

y = 0.06x + 500

y = 16x + 32

y = 62x + 16

y = 0.06x + 32

Question

Mathematics

Nyasia Short

8 January, 12:29

The following data table represents the total cost of a monthly cell phone bill as a function of the number of minutes that the phone is used each month.

Minutes 500 750 1,000 1,250 1,500

Total Monthly Cost (in dollars) $62 $77 $92 $107 $122

Choose the correct linear model that represents the total monthly cost as a function of time.

y = 0.06x + 500

y = 16x + 32

y = 62x + 16

y = 0.06x + 32

+4

Answers (1)

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Leia · Answer 1

(500,62) (750,77)

slope = (77 - 62) / (750 - 500) = 15/250 = 0.06

y = mx + b

slope (m) = 0.06

(500,62) ... x = 500 and y = 62

now we sub and find b, the y int

62 = 0.06 (500) + b

62 = 30 + b

62 - 30 = b

32 = b

so ur equation is : y = 0.06x + 32