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13 August, 16:21

The height (h metres) and age (a years) of a tree are related by

the following inequality:

h < 4a - 3 for values of a between 1 and 10

Which pair of values satisfy this inequality?

a. h = 2 and a = 1

b. h = 6 and a = 2

c. h = 10 and a = 3

d. h = 20 and a = 6

+4
Answers (1)
  1. 13 August, 17:05
    0
    H < 4a - 3

    (2) < 4 (1) - 3

    2 < 4 - 3

    2 < 1

    Not True

    h < 4a - 3

    (6) < 4 (2) - 3

    6 < 8 - 3

    6 < 5

    Not True

    h < 4a - 3

    (10) < 4 (3) - 3

    10 < 12 - 3

    10 < 9

    Not True

    h < 4a - 3

    (20) < 4 (6) - 3

    20 < 24 - 3

    20 < 21

    True

    Answer: (d) h = 20 and a = 6
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