AM-417

Exponential and logarithmic models

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

The temperature,

T^\circ

C, of a drink

t

minutes after it is poured is modeled by

T=24+Be^{-0.4t}

, where

B

is a constant. When

t=0

, the temperature is

80^\circ

C. Find the value of

B

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