Question

The weather forecast states that the temperature will be lower than –7°F tonight. Let t represent the temperature in degrees Fahrenheit.

Which inequality models this situation?

A. t < -7 and t must be a negative number

B. t < -7 and t must be a positive number

C. t > 07 and t may be a negative number

D. t > -7 and t must be a positive number

Answer 1

t < -7 and t must be a negative number

Examples: t = -8 is both smaller than -7 and negative.