Find the solution to the following system using substitution or elimination Y=3x + 2 Y=-2x - 8

x + y = 4 ,  x − y = 2

Step-by-step explanation:

That is with substitution

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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

55 degrees because 55+55=110 degrees