Question

fill in the blanks below.
(a) ahmads test - score average decreased by 14 points this semester. write a signed number to represent this change in average.
(b) a hibernating animal lost 7 pounds. write a signed number to represent this weight change.

Explanation:

Step1: Identify decrease as negative

A decrease in a quantity is represented by a negative - signed number. Since Ahmad's test - score average decreased by 14 points, the signed number is - 14.

Step2: Identify weight loss as negative

Weight loss is also represented by a negative - signed number. Since the hibernating animal lost 7 pounds, the signed number is - 7.

Answer:

(a) - 14
(b) - 7