The coordinates of the vertices of a triangle are Al-6-31.81-5.21.01-2-21. If the coordinates are changed to A' (6.-31. B'15.2.C 12.-21. what transformation was
performed
Translation
Reflection across theras
Rotation by 180°
Reflection across they axis
Dilation
(Your gonna have to zoom in)

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an = 22 + (n-1) *6

110 seats

step-by-step explanation:

an=a1+(n-1)(d)

a1 = 22   this is the first item in the sequence

d =6   this is how the sequence goes up

a)   an = 22 + (n-1) *6

b) a12 = 22 + (12-1) *6

    a12 = 22+11*6

  a12 = 22 +88

  a12 = 110

the answer to your question is b.