When shipping an important package you must choose from among four companies each of which offer both ground and air shipping and a choice of standard express or overnight delivery in sending these three decisions how many unique shipping options do you have

4 x 3 x 2 = 24

Correct on

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