Answer:
Step-by-step explanation:
I think its D cuz there should be one bar with negative value
(6x+1)(-3x+1)
-18x^2-3x+6x+1
-18x^2+3x+1
A(n)=a(1)+d(n-1), d=a(16)-a(15)=-5-(-53)=48
a(15)=a(1)+d*(15-1),
-53=a(1)+48*(15-1),
a(1)=-53-48*14= -725
a(n)=-725+48(n-1)
