I need help, please! ASAP.

Formula for percent change is C = {x_2 - x_1}/{x_1}  

C=relative change

x_1=initial value

x_2=final value

Step-by-step explanation:

<_> daddy

Step-by-step explanation:

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.