The 9 officers of the student council are going on a trip to an amusement park. each student must pay an entrance fee plus $5 for meals. the total cost of the trip is $225. solve the equation 9(e+5)=225 to find the cost e of the entrance fee for each student.
a. $20
b. $45
c. $25
d. $14

(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.