Question

(a) a hibernating animal lost 3 pounds. write a signed number to represent this weight change.
(b) debras test - score average decreased by 6 points this semester. write a signed number to represent this change in average.

Explanation:

Step1: Identify weight - loss sign

A loss is represented by a negative number. Since the animal lost 3 pounds, the signed number is - 3.

Step2: Identify test - score - average decrease sign

A decrease in test - score average is represented by a negative number. Since the average decreased by 6 points, the signed number is - 6.

Answer:

(a) - 3
(b) - 6