2023HSCMultiple choice

Q1

1 mark

Question

The temperature $T(t)$ °C of an object at time $t$ seconds is modelled using Newton’s Law of Cooling,

T(t)=15+4e^{-3t}.

What is the initial temperature of the object?
A. $-3$
B. $4$
C. $15$
D. $19$

Try the question before revealing the answer.

Syllabus alignment

Calculus

Rates of ChangeUse derivatives to model and solve rates of change, related rates, and exponential growth and decay problems.

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