The coefficient 20 is the estimated increase in the height of the plant per year.
How can the given expression be interpreted?
In the given expression, 56 represents the height of the plant when it was planted. It can also be interpreted as the fixed height. 20 represents the rate of growth of the plant per year. Every year, the plant increases by 20. It is the variable rate of growth.
What is the height of the plant after 1, 2 and 5 years?
- Height of the plant after 1 year = 56 + 20(1) = 76
- Height of the plant after 2 years = 56 + 20(2) = 96
- Height of the plant after 5 years = 56 + 20(5) = 156
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