aralyngoldsmith
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A sand dune stands 5 feet above sea level. The hill is eroding at a rate of 1 foot per 20 years. Let y represent the height of the sand dune after x years. Which equation represents the situation?

a. y=-1/20x-5
b.y=-1/20x+5
c.-20x-5
d.y=-20x+5

Respuesta :

Answer:

The given 5 feet above sea level could be taken as the y-intercept, while the rate of -1 foot per 20 years could be taken as the slope. The height y is a function of time. Using y-intercept slope form of a line: Y = (-1/20)t + 5

Step-by-step explanation:

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