Answer:SAS
Step-by-step explanation:
Answer:
-21
Step-by-step explanation:
It would have to be -21 because there's -7, but the threes not negative so it would have to be -21
Yes if he practices X amount of hours and is told to practice X amount of hours than he practiced long enough
Answer: 18 c
Step-by-step explanation: since they have the same variables you can easily just add them together