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21 July, 13:51

Lauren is going to drive from her house to City A without stopping. Lauren plans to drive at a speed of 35 miles per hour, and after driving for 2 hours, she will be 70 miles away from City A. Write an equation for the function D (t), representing Lauren's distance from City A t hours after leaving her house.

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  1. 21 July, 16:00
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    D (t) = Do - 35*t

    (Where Do is the distance from Lauren's house to City A)

    Step-by-step explanation:

    To write a equation for D (t), we can use the following variables and constants:

    Do = inicial distance from Lauren's houre to City A

    V = speed that Lauren is driving (V = 35)

    t = amount of hours travelled.

    So, we can write this equation:

    D (t) = Do - V*t

    We use a negative sign for the speed because the distance from Lauren to the City A is decreasing with time (Lauren is approaching the City).

    So, we have that our equation is:

    D (t) = Do - 35*t
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