6 11/14 would be the correct answer to your math problem!
I’m pretty sure it’s w^25
The linear equation that represents the <u>number of tiles in figure x</u> is given by:

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A linear equation has the format:

In which:
- m is the slope, that is, the rate of change.
- b is the y-intercept, that is, the value of y when x = 0.
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- Figure 0 has 5 tiles, that is, when
, thus 
- Seven new tiles in each figure, that is, a rate of change of 7, thus

The number of tiles in figure x is given by:

A similar problem is given at brainly.com/question/16302622
The total charge would be $445.
Hope this helps!!