An amusement park offers a yearly membership of
that allows for free parking and admission to the park.
Members can also use the water park for an additional
per day.
Nonmembers pay
for parking,
for admission, and
for the water park.
a.
\It would take for the total cost to be the same for a member and a nonmember if they both use the water park at each visit.
\Write an equation.
\Let
is the number of visits.
The cost for
visits for a member is represented by the expression
.
The cost for
visits for a nonmember is represented by the expression
.
The cost is same for a member and a non-member.
\The equation is
.
Find the number of visits.
\
(Orginal equation)
(Add inside terms)
(Subtract
from each side)
(Apply additive inverse property :
)
(Divide each side by
)
(Simplify)
The total cost would be the same for a member and a nonmember if they both use the water park at each visit for
visits.
b.
\Make a table for the costs of members and nonmembers after
and
visits to the park.
Tabular form:
\| Visits | \Cost for members | \Cost for nonmebers | \
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Observe the table:
\The ordered pairs of cost for members are
.
The ordered pairs of cost for nonmembers are
.
c.
\Graph:
\Plot these points on a coordinate graph.
\Graph the number of visits on the
-axis and the cost on the
-axis.
Graph:
\g(1).gif\")
Note:
\The dots in pink color denote cost of the member in the amusement park.
\The dots in blue color denote cost of the non-member in the amusement park.
\Observe the graph:
\The ordered pairs of cost for members are
.
The ordered pairs of cost for nonmembers are
.
Both functions are linear.
\The points for non-members are lower than the points for members when
is less than
.
Therefore, if a person is going to visit the park less than
times, it will be cheaper to be a nonmember.
If a person is going to visit the park more than
times, it will be cheaper to be a member.
a.The total cost would be the same for a member and a nonmember if they both use the water park at each visit for
visits.
b.Tabular form:
\| Visits | \Cost for members | \Cost for nonmebers | \
![]() | \
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c.Graph:
\g(1).gif\")
If a person is going to visit the park less than
times, it will be cheaper to be a nonmember.
If a person is going to visit the park more than
times, it will be cheaper to be a member.