Question

the train appears to go the same distance each minute.
predicted amount of time to travel 54 kilometers: minutes
(b) boris is deciding how many people to take to the movies. the table below shows the cost for different sized groups of people.
number in group | 3 | 6 | 8
cost (in dollars) | 15 | 30 | 40
choose the correct description.
the cost for each person is not always the same.
the cost for each person appears to be the same.
predicted cost for 9 people: $

Explanation:

Step1: Calculate cost per person

For 3 people: $\frac{15}{3}=5$ dollars
For 6 people: $\frac{30}{6}=5$ dollars
For 8 people: $\frac{40}{8}=5$ dollars

Step2: Select correct description

All per-person costs equal 5.

Step3: Predict cost for 9 people

Multiply 9 by per-person cost: $9 \times 5 = 45$

Answer:

The cost for each person appears to be the same.
Predicted cost for 9 people: $\$45$