Derek collects quarters that have the names of the 50 U. S. states on them. He collected 13 different state quarters in 2.25 months. How long will it take him to collect all 50?

Write the fraction or mixed number and the decimal shown by the model

Find the quotient with the restriction.

(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.