AM-147

Exponential and logarithmic models

A Math · Secondary 3 · Medium · Exponential and logarithmic models

The temperature,

T^\circ\text{C}

, of a drink

t

minutes after it is removed from a heater is modeled by

T=22+Be^{-0.4t}

, where

B

is a constant. Given that

T=70

when

t=0

, find the value of

B

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