Question

What is the approximate average rate of

change for the height of the plant, measured in
centimeters per day, between day 20 and day
40?(leave answer in fraction and decimal)

Answer 1

Average change in height of the plant is 0.5 cm per day.

Explanation:

Height of the plant on day 20 = 40 cm

Height of the plant on day 40 = 50 cm

Change in height = 50 - 40 = 10 cm

Number of days between day 20 and day 40 = 20

Average change in height of the plant =
`\frac{\text{Change in height of the plant}}{\text{Duration}}`

=
`(10)/(20)`

= 0.5 cm per day

Therefore, average change in height of the plant is 0.5 cm per day.