Answer quick please would really appreciate it

x-4 is a factor

Step-by-step explanation:

To know the factor, we simply equate the binomial to zero

After doing this, we substitute the x-value into the polynomial. If the answer gotten is zero, then it is a factor of it

Let us try x -4

set x -4 = 0

x = 4

Find f(4)

That will be ;

2(4)^3 + 3(4)^2 -39(4) - 20 = 0

a - base

b - exponent

so,

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