Mathematics, 29.05.2020 09:58 rodriguezzamyy
Ricardo has r minutes left on his cell-phone card. He wants to call his friend and still have 8 minutes left over to make calls later. Which expression describes the length of time he can talk to his friend?
A. 8 – r
B. 8r
C. r + 8
D. r – 8
Answers: 3
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Ricardo has r minutes left on his cell-phone card. He wants to call his friend and still have 8 minu...
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