Three families went to an amusement park
together. The number of people in each
family is listed in the table.
Family Adults Children Seniors
McGraw 2 3 1
Churchill 1 2 2
Sanchez 2 1 1
Write an expression in simplest form to
show how much it costs all adults, children,
and seniors from the three families to
attend the amusement park when
a is the
cost of an adult ticket,
c is the cost of a
child ticket, and
s is the cost of a senior
ticket.