Answer:
4x + 7
Step-by-step explanation:
9x - 5x = 4x
-3 + 10 = 7
Answer:
-2
Step-by-step explanation:

Answer:
Irrational
Step-by-step explanation:
The square root of 28, which is 5.291502622129181, is not a rational number. It cannot be written as a simple fraction, so it is called irrational.