Question

A cold front is moving in and the meteorologist says that the temperature will decrease at a rate of 5 degrees per hour throughout the night. Which equation models the change in the temperature over the course of 6 hours?

A. (5)(-6) = -30 degrees
B. (5)(6) = 30 degrees
C. (-5)(-6) = -30 degrees
D. (-5)(6) = -30 degrees

Answer 1

The answer is letter D
(-5)(6)= -30 degrees

Answer 2

D. If it’s going down by 5° per hour (-5) and it goes down for 6 hours (6) the only plausible answer is D