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7. Melissa wants the city to provide every Farrington classroom with recycling bins and is in the process of collecting student signatures for her petition. So far Melissa has collected 82 signatures and wants to collect 15 signatures for each classroom she visits during advisory time. If S is the total number of signatures Melissa has collected, and C is the number of classroom visited, write an equation.

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EXPLANATION

Let's see the facts:

Number of collected signatures=S= 82

Signatures rate: 15 signatures/classroom

C= number of classroom visited

Now, we can assevere that the equation is given by the following relationship:

Total signatures collected = Collected signatures + Rate* Number of classroom visited

Let's call T to the total number of signatures and x to the rate>

The equation is:

T = S + xC

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