Simplify the expression to a + bi form:
(-7 +6i) – (-1 + 5i)

-6+i

Step-by-step explanation:

(-7+6i)-(-1+5i)

-7+6i+1-5i

-7+1+6i-5i

-6+6i-5i

-6+i

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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