At the beginning of the day stock xyz opened at 3.15. at the end of the day it closed at 2.87. what is the rate of change of stock xyz. a) 4.1% b) -8.9% c) 9.8% d) -0.09%

The correct answer is B) -8.9%

The rate of change for any problem is always determined using the following equation.

In this case, the old value is 3.15 and the new value is 2.87. SO we use these in the equation to get the answer.

-.088889 * 100

-8.9%

typically if you want , you would actually put questions here for us to you. but hey, that's just me. maybe someone will magically answer the questions for you without knowing what they are.

the rocket cannot penetrate the ground, in a contextual sense, therefore the roots of this equation should be the domain of this function. i'll let you find the roots of this quadratic equation (hint: use the quadratic formula:  

1- c

2-a

step-by-step explanation:

mark brainliest!