Answer:
4) 7a + 11b
5) i'm not sure
6) 3 (n = 3)
7) i can't see the last ones, but i know that y = 6
i hope this helps
sorry i can't help more :(
Have a great day!
Answer:
7 3/5
Step-by-step explanation:

Im pretty sure the answer is 80%.
Answer:
80 minutes or 1 hour and 20 minutes
Since Joe can type 60 word per minute, divide 4800 by 60, you will get 80 minutes which is basically 1 hour and 20 minutes.
Answer:
(-26, 32)
Step-by-step explanation: