To become a member at All Sport Gym, you must first pay a one time fee of $25. After that, the cost of membership is $10 per month. Write an equation to model this situation.

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72

i believe it's a.

i'm not sure on this one, most likely correct.

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