Respuesta :

Edufirst
Take this into account:

1) Decrease every three months => 12 / 3 = 4 => 4 times is a year

2) Increase every four months => 12 / 4 = 3 => 3 times in a year

3) Decrease of 5% => rate = 0.95

4) Increse of 12% => rate = 12%.

With that the answer comes easily: expression A decays at a rate of 5% every 3 months, while expression B grows at a rate of 12% every four months.

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