The monthly fee for the phone is 12 USD and for phone unit 0.08 USD.

How much family pay phone in the first quarter Q1, if on January 1 had on the counter 97362 units and on April 1 97946 units.

Correct answer:

x =  82.72 USD

Step-by-step explanation:

x=312+(9794697362)0.08=82.72 USD

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