Katrina's mother is 2 inches shorter than her father, Katrina is 2 inches shorter than her mother, and Katrina's brother is 2 inches shorter than Katrina. Which best represents the change in height from Katrina's father to her brother?

-6 inches

Step-by-step explanation:

From the question, we can say that;

✓Katrina's mother is 2 inches shorter than her father, that is (-2inch shorter)

✓Katrina is 2 inches shorter than her mother, that is (-2inch shorter)

✓Katrina's brother is 2 inches shorter than Katrina that is (-2inches shorter)

The best represents the change in height from Katrina's father to her brother will be

(addition of all the negative difference in height)

= -2inches + -2inches+ -2inches

= -6 inches

Hence, (-6 inches) represents the change in height from Katrina's father to her brother

i believe the answer is c.

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.