The situation that is defined by the linear equation P = 40 + 22t is "The initial amount is 40 and the rate of change is 22".
Given:
P = 40 + 22t
where,
So,
if t = 3
P = 40 + 22t
= 40 + 22(3)
= 40 + 66
P = 106
Therefore, the initial amount is 40 and the rate of change is 22 describes the linear equation P = 40 + 22t
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