4. A video rental store charges a $20 membership fee and $2.50 for each video rented. Write a linear equation (y=mx+b) to model this situation. If 15 videos are rented, what is the revenue?(with graph) 5. Suppose that the water level of a river is 34 feet and that it is receding at a rate of 0.5 foot per day. Write an equation for the water level, L, after d days. In how many days will the water level be 26 feet? (with dranh)

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