Answer:
FIRST option is the correct answer
Step-by-step explanation:
First option is the correct answer.
Equating it with:

10x2 is the next operation to perform after 9+6
65 miles per hour divided by 60 minutes is 1.08 miles a minute.
10 miles divided by 1.08 is 9.26 minutes rounded to 9
50 miles per hour divided by 60 minutes is .83 miles per minute.
10 miles divided by .83 is 12.04 minutes rounded to 12
12 - 9 = 3 fewer minutes
Answer:
-13a+10b
Step-by-step explanation:
-3a- 4b- 2(5a-7b)
OPEN THE BRACKET
-3a-4b-10a+14b
CLT
-3a-10a-4b+14b
-13a+10b. (ANSWER)