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 t he sand dune after x years. Which equation represents the situation?
2 answers:
Answer:
y=-1/20x+5
Step-by-step explanation:
The situation will be represented by linear equation, this is given by: y=ax+b where: a=slope=rate b=y-intercept from our situation: a=-1/20 b=5 ft thus the equation modeling the situation will be: y=-1/20x+5 Answer: y=-1/20x+5
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