−3/8÷−6/7 a −716

b −928

c 928

d 716
Melissa put her cat, Herman, on a diet and kept track of his weight. At the end of 4 weeks, she recorded Herman's weight change as −4 1/2 ounces. She noticed that he had lost the same amount of weight each week.

What is Herman's weight change each week of the diet?

Enter your answer as a simplified mixed number, in the box.