AM-1437

Exponential and logarithmic models

A Math · Secondary 4 · Hard · Exponential and logarithmic models

The table shows values of

t

and

\lg P

for a population model. It is suggested that

P = ab^t

. When

t = 0

P = 400

, and when

t = 5

P = 640

. Find the value of

b

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