The answer is B (the quotient of four time some number and six)
The average rate of change for the height of the plant measured in centimeters per day between day 0 and day 20 is 1.32 cm per day.
<h3>What is average height?</h3>
The average height is the ratio of change in height of the plant and the time taken taken for that change.
Given is the height of a plant in centimeters is modeled as a function of time, in days.
For day 0, the height is 18cm and the height for day 20 is 42 cm, then the average height change is
height per day = 42 - 18/ 20 -0
height per day = 1.2 cm/day
Thus, the average height of plant is 1.2 cm/day.
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Answer:
4.5
Step-by-step explanation:
We can simplify ratios to one to find the answer
4 pounds is about 2 kilograms
2 pounds is about 1 kilogram
1 pound is about half a kilogram
9 pounds x 0.5 = 4.5