Class Trip Budget: Tables and Graphs

Use equivalent ratios to plan bus seats, meals, and museum admission.

Reserve Bus Seats

Use equivalent ratios. The bus service charges $48 for every 6 seats reserved, with no extra fees.

Complete the bus reservation table.

Bus Reservations
Seats	Cost ($)
6	48
12	?
?	240

The cost for 12 seats is $.
A cost of $240 reserves seats.

Which row could be added to the bus reservation table?

A. 18 seats cost $60.B. 18 seats cost $96.C. 18 seats cost $144.D. 18 seats cost $288.

Amira has $192 in the bus budget. She uses all of it to reserve seats at the same ratio of 6 seats to $48.

How many seats can she reserve? seats

Noah says, “Going from 6 seats to 12 seats adds 6, so I should also add $6 to $48.” Which correction keeps the ratios equivalent?

A. Double both values to get 12 seats for $96.B. Add 12 to both values to get 18 seats for $60.C. Double only the seats to get 12 seats for $48.D. Add 6 to both values to get 12 seats for $54.

Plan Meals and Tickets

Keep each cost ratio constant. All prices include any fees.

The meal service charges $15 for every 3 boxed lunches.

Boxed Lunch Orders
Lunches	Cost ($)
3	15
6	?
12	?
?	90

The cost for 6 lunches is $.
The cost for 12 lunches is $.
A $90 order includes lunches.

The museum's standard admission costs $6 for every 2 students.

Standard Museum Admission
Students	Cost ($)
2	6
4	12
6	?
?	36

Admission for 6 students costs $.
A payment of $36 covers students.

Select all lunch orders equivalent to 3 lunches for $15.

The class sets aside $100 for lunches and standard museum admission for 12 students. Each student needs one lunch and one ticket. Lunches cost $15 for every 3 students, and admission costs $6 for every 2 students.

How much of the $100 remains after these two expenses? $

Plot and Compare Admission Plans

The museum offers two admission plans. Use student count as x and total cost in dollars as y.

Museum Admission Plans
Students	Standard cost ($)	School cost ($)
2	6	4
4	12	8
6	18	12

Plot all six pairs from the admission table on the coordinate plane. For student counts of 2, 4, and 6, label the standard-plan points S1, S2, and S3, respectively. Label the school-plan points C1, C2, and C3 in the same order. Do not connect the points.

10.

Which ordered pair would extend the school-plan pattern to 8 students? Remember that student count is x.

A. (16, 8)B. (8, 14)C. (8, 24)D. (8, 16)

11.

The class has $48 for museum admission. Both plans continue at the ratios shown in the table.

How many students can attend using the standard plan? students
How many students can attend using the school plan? students

12.

For 18 students, bus seats cost $48 per 6 seats, lunches cost $15 per 3 lunches, and school-plan admission costs $4 per 2 students. Reserve one seat, one lunch, and one ticket per student.

What is the total trip cost for these 18 students? $

13.

Luis says, “The standard-plan point (4, 12) and the school-plan point (6, 12) have the same cost, so the two plans are equally good deals.” Explain why his comparison is misleading. Use equal student counts from the table or your graph.