Solve this system of equations using the Substitution method. Don't forget to write your final answer as a coordinate point. You must show all your work. 3x + y = -2

y = 2x + 3

a) 7x=7

step-by-step explanation:

b

step-by-step explanation:

df =

both have same length

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