Answer:
C
Step-by-step explanation:
I hope i got it correct :)
It will take her about 67 minutes .. ( rounded )
Multiply 9 feet times 12 inches and you get 108 inches. Then take 108 inches and divide it by 12 sections, you get 9 inches.
Answer: Each section should be 9 inches long, or 0.75, or 3/4 feet long.
If the three integers are
, then we have

We can combine the fractions on the left side:


Subtract the 17190 from the 21840. you get 4650. 4650 divided by 21840 is 0.21. The percent decrease is 21%