Answer:
d = - 6
a = - 20
T(n) = a + (n - 1)d
= -20 + (n - 1 )(-6)
= -20 - 6n + 6
= -14 - 6n
= -2(7 + 3n)
-20 -6(n-1) answer
x=1/2
Step-by-step explanation:
