On monday, stock xyz opened at $56.86. on friday, it closed at $64.92. what is the rate of change of stock xyz for this particular week?
a. 14.2%
b. 8.1%
c. 6.4%
d. 5.6%

14.17%

Rounded: 14.2%

Step-by-step explanation:

Final Amount - Starting Amount = * 100 = Answer

64.92 - 56.86 = = 0.1417% * 100 = 14.17%

If you need to round it it's 14.20%

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.