7. four friends went shopping at a music store. the table shows the
number of cds each friend bought and the total cost. complete the
table to show the average cost of the cds each friend bought.
friend
number of cds
purchased
total cost
(in dollars)
average cost
(in dollars)
lana
$36.72.
troy
$40.
juanita
$47.
alex
$54.

(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.