Respuesta :

mhanifa

Answer:

- 3/4 feet per hour

Step-by-step explanation:

Rate of change is the slope.

Take two points on the graph and use the slope formula.

Points:

  • (0, 9) and (4, 6)

The slope is:

  • m = (6 - 9)/(4 - 0) = -3/4

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