Answer:

Step-by-step explanation:
Use exponent rule
:


2x-5=15
2x=20
x=10
the answer is B
The answer is A, because 43 of the flights were from UA and were on time, this is out of a whole of 87 flights.
Answer:
b
Step-by-step explanation:
1 hour = 60 minutes
Tuesday: 60 divided by 4 = 15. Karen did it 3/4 of a hour so we multiply 15 by 4 which is 45. 45 equals 45 minutes. On Tuesday, Karen finished her chores in 45 minutes
Wednesday: first we divide 60 by 12 which is 5. 5 would equal 5 minutes. now we multiply 5 by 5 which is 25. Karen finished her chores in 25 minutes.
Answer: Karen finished her chores 20 minutes faster on Wednesday than Tuesday.
Hope this helps!