a group of 19 students want to see the show at the planetarium. Ticket cost $11 for each student who is a member of the planetar
ium's frequent visitor program and $13 for each student who is not a member. The total cost of the student tickets is $209. Let x represent the number of student in the group who are members of the frequent visitor program. Write an expression in term of x for the number of student in the group who are not member
X = number of students who are members. <span>19-x is the number of people who are not members.</span> x number of people paid $11 for tickets and (19-x) number of people paid $13.$11x+$13(19-x)=$209 for the total cost of the tickets. $11x+ $247-$13x=$209 $11x-13x = $209 - $247
$-2x = $-38
divide -2 by both sides
x=19, meaning that all of the students are members.
