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Activity 2 Real - Life Situations and Rational Functions

1.A river flows at 2.8 kilometer per hour and Anita takes 8 hours to road 20 kilometer of the river and back. The relation between her speed in drawing as a function of time​.

2.The  Amount of electric current flows as a function of the load's resistance.

3.The amount of charged fees as a function of the number of sent messages in a mobile phone​