Answer:
Step-by-step explanation:
If it costs $30 to make 6 notebooks then that is $5 for each notebook. So multiply $5 times 50 and you get $250.
Answer:
9r
Step-by-step explanation:
combine like terms in PEMDAS order. Add 4, 9, and 7, then, subtract 11.
Answer:

Step-by-step explanation:

Try 3+x which would be 4 and 7 is greater then 4 because x by its self or and other variable is 1. hope this helped!
Answer:
The second one.
Step-by-step explanation: