3) Which set of sides will make a triangle?

if the probability is 1/12, 75 people will receive a $25 gift card

step-by-step explanation:

part a: 1.08

part b: 27.59

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