Mathematics, 27.01.2020 03:31, jennifercastillo1233

Um plano de cobrança por telefone celular cobra us $ 50 por mês por 400 minutos ou menos. o tempo adicional custa us $ 0.30 por minuto. escreva uma função por partes para representar essa situação. faz o gráfico da função:

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Um plano de cobrança por telefone celular cobra us $ 50 por mês por 400 minutos ou menos. o tempo ad...