algebra 1

how do you find the rate of change and explain what it means for thhe situation?
heres the table:
Time(hours) Distance(miles)
4 260
6 390
8 520
10 650

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asked by alex
  1. Before the hour table started it may have traveled 260 miles in four hours. It is hard to say because no data is given for zero hours. However assuming it was moving from 0 distance to 260 miles in those initial four hours it went 260 miles / 4 hours or 65 miles per hour on the average before he first point in your table.
    In the first two hours (from 4 to 6) it went 130 miles or 65 miles per hour
    In the second two hours (from 6 to 8) it went 130 miles or 65 miles per hour
    In the third two hours (from 8 to 10) it went 130 miles or 65 miles per hour

    So the rate of change of distance with time (the speed) is 65 miles per hour over every two hour time interval measured.

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    posted by Damon

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