Answer:
(a) The Plant A after (i) 2 weeks was 7 cm high and after (ii) 3 weeks was 9 cm high. (b) The Plant B after (i) 2 weeks was 7 cm high and after (ii) 3 weeks was 10 cm high. (c) The Plant A grew \[9\text{ }cm7\text{ }cm=2\text{ }cm\] during the 3rd week. (d) From the end of the 2nd week of the end of 3rd week, the Plant B grew \[10\text{ }cm7\text{ }cm=3\text{ }cm\]. (e) The Plant A grew in 1st week \[=2cm0cm=2cm\] The Plant A grew in 2nd week \[=7cm2cm=5cm\] The Plant A grew in 3rd week \[=9cm-7cm=2cm\] Therefore, the Plant A grew mostly in second week. (f) The Plant B grew in 1st week \[=1cm-0cm=1cm\] The Plant B grew in 2nd week \[=7cm-1cm=6cm\] The Plant B grew in 3rd week \[=10cm-7cm=3cm\] Therefore, the plant B grew least in first week. (g) At the end of 2nd week, the two plants shown here were of the same height.
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