The hu family goes out for lunch, and the price of the meal is $51. the sales tax on the meal is 6%, and the family also leaves a 20% tip on the pre-tax amount. what is the total cost of the meal?

(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.