Mathematics, 11.07.2019 22:30 keyshawn437

Amobile phone company uses the formula c = 10t + 20m to calculate the total cost of a bill. c is the total cost of the bill in pence. t is the number of text messages. m is the number of minutes of call time. calculate the total cost for 150 texts and 50 minutes of call time.

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Amobile phone company uses the formula c = 10t + 20m to calculate the total cost of a bill. c is the...

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