A student wants to buy a new cell phone. Teen Mobile charges $15 a month plus $10 for every one gigabyte of data used. Bruh-rizon charges $30 a month plus $7 for every one gigabyte of data used. Use this info to identify the growth (or unit rate of change) and starting value for:

The unit rate. The gigabyte remains since it's already a unit value "Every one gigabytes." So,

Teen Mobile: $0.5 per day and $10 for every gigabyte. so, y = 0.5x + 10

Bruh-rizon: $1 per day and $7 for every gigabyte. so, y = 1x + 7

Explanation:

Teen Mobile:                                 Bruh-rizon:

x = Monthly                                    y = 30x + 7y

y = each gigabyte

y = 15x + 10y

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