The percentage of soldiers who are unavailable for combat has increased approximately linearly from 8% in 2007 to 16% in 2010. The main causes are due to repeated deployments and health problems. Let p be the percentage of soldiers unavailable for combat at t years since 2000. Find an equation of a linear model to describe the data.

(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.