Can somebody help me solve this equation

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%

Compare the cost of the bike trips from the two companies shown.for both the cost in a linear function of the number of days which statements is true

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83