Question

The data in the table relates the total cost y to have a party with x guests at a restaurant.

In the data table, the x-column represents the number of guests and the y-column represents the total cost in dollars. When x is ten, y equals two hundred. When x is fifteen, y equals three hundred. When x is twenty-five, y equals five hundred. When x is thirty, y equals six hundred.

Based on the information in the table, what is the function rule?

y equals x plus one hundred ninety

x equals y plus one hundred ninety

y equals twenty x

x equals twenty y