Answer:
3x^2+36x+81
Step-by-step explanation:
(x+9)(3x+9)=3
+9x+37x+81
Answer:
It stopped on the 28th floor.
Step-by-step explanation:
9-4=5
5+7=12
12+8= 20
20+8= 28
Answer:
B
Step-by-step explanation:
evry step is in the picture
Answer:
-1373.
Step-by-step explanation:
Here the common difference is -33 - -13 = -20.
nth term = a1 + d(n - 1)
69th term = -13 - 20(69 - 1)
= -1373.