Answer:
-1/2x + 1
Step-by-step explanation:
-72a^3 +108a^2
(2a)(6a)(2a-8a+9)= (2a)(6a)(-6a+9)=12a^2(-6a+9)
= -72a^3 +108a^2
614
geometric because it is decreased by 1/27
