Answer:
options 4 and 6 I believe
(t - 7)³
(t - 7)(t - 7)(t - 7)
(t² - 7t - 7t + 49)(t - 7)
(t² - 14t + 49)(t - 7)
(t³ - 7t² - 14t² + 98t + 49t - 343)
t³ - 21t² + 147t - 343
Answer:

Step-by-step explanation:
Given

Required
Find

Calculate 
Using tan rule

So:






'
'So:



Well subtract 8 from 1000 and then do that five times. so 992,984,976,968, and 960<span />