Respuesta :

The x axis is labeled as Number of days.

What is graph?

Graph is a mathematical representation of a network and it describes the relationship between lines and points.

let x be the  number of days and y be money.

So, the equation is

y = -7x + 150.

Hence, the x axis is labeled as Number of days.

Learn more about this concept here:

https://brainly.com/question/1509203

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