How would I actually work out these two problems? I don't understand how to solve for them. 2. What is the average yearly rate of change of carbon 14 during the first 5000 years?

3. Calculate the average rate of change from 10 thousand years to 20 thousand years.

(c) the diagram shows the first three shapes of a matchsticks arrangement.first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.