The weight of an object on Earth varies directly as its weight on the moon. If an rock weighed 5 pounds on the moon and 30 pounds on Earth and another rock weighted 26 pounds on the moon and 156 pounds on Earth, what is the constant of variation? Create a chart.

The cost of a bus ticket varies directly with the number of miles travelled. If a ticket for a 180-mile trip cost $45, and a ticket for a 1,500-mile trip cost $375, what is the constant of variation? Create a chart.