Question

You purchase a plant and begin measuring its height each day. This plant grows the same

amount each day. When you got it, it was 10 cm tall. The next day it was 13 cm tall. The day
after that it was 16 cm tall. How tall will it be one week after you purchased it?

Answer 1

• 31 cm

Explanation:

Initial height is 10 cm and daily growth rate is 3 cm as:

• 13 - 10 = 3 and
• 16 - 13 = 3

After one week the plant will be:

• 10 + 7*3 =
• 10 + 21 =
• 31 cm tall