3 A poster announces a carnival is coming to
town. People pay an admission fee to enter
the carnival. Then they buy tickets to go on
rides. The total cost of attending the carnival
is a function of the number of tickets bought.
The graphs and equations model the total
costs for children and for adults.
y = 1.25x + 10
y = 0.75x + 5
Total Cost (5)
SOLUTION
40
30
20
10
0
a
10 20
Number of Tickets
a. Which equation and which line model the total cost for a child?
Which equation and line model the total cost for an adult?
Show your work.
b. Check your answer to problem 3a. Show your work.
LESSO
CARNING
ride fiche
De