A 9 minute video is 3 times the length of the 3 minute movie ( 9 / 3 = 3) so it will take her 3 times as long to edit it.
4 hours x 3 = 12 hours.
It will take her 12 hours.
Answer:
4/3
Step-by-step explanation:
16 - 8 8
--------- = -------- = . 4/3
12 - 6 6
x^-12/ x^-7
= x^(-12-(-7))
= x^-5
= 1/x^5
option is c=2/3
2/3+ 1/7 = 17/21
12 bucks