Question

Christine wears her thermal coat when the temperature is colder than $-4$ ${(}^{\circ }C)$. If $T$ is the temperature in ${(}^{\circ }C)$ at which Christine wears her winter coat, which of the following inequalities best models the situation?

• A. $T<-4$
• B. $T>-4$
• C. $T<4$
• D. $T\ge 4$

Answer 1

The correct option is A $T<-4$

We want to represent temperature colder than $-4^{\circ }C$. In mathematical terms, we want to represent temperature less than $-4^{\circ }C$.