Explain how you got each answer thoughally(explain the steps)

At the beginning of the day, stock xyz opened at $6.12. at the end of the day, it closed at $6.88. what is the rate of change of stock xyz? a. 1.17% b. 11.0% c. 12.4% d. 81.5%

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?