Texas HS Algebra 2 Question of the Day

Test your knowledge with a hand-picked multiple-choice question.

A cup of tea cools according to the exponential model $T(t)=A+B\cdot r^{t}$, where $t$ is minutes after brewing and $T$ is in degrees. The room temperature is 22, you measure $T(0)=92$ and $T(10)=60$, and you are asked to predict $T(20)$. According to a problem-solving plan (analyze → model → solve → check), what is the best first step?

Select an answer and click Check.