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
Start from the parent function 
In the first case, you are computing

In the second case, you are computing
, you translate the function horizontally,
units left if
and
units right if
.
On the other hand, when you transform
, you translate the function vertically,
units up if
and
units down if
.
So, the first function is the "original" parabola
, translated
units right and
units up. Likewise, the second function is the "original" parabola
, translated
units left and
units down.
So, the transformation from
to
is: go
units to the left and
units down
Pyramids or prisms can have 7 or more vertices.
Answer:
I could be wrong, but I think it's x=12