Answer: A
Step-by-step explanation:
If you put 0 in for x, then you would be dividing by 0. Dividing by 0 is always undefined.
Answer:
Yes, because if you substitute 10 for r in the equation and simplify, you find that the equation is true.
Step-by-step explanation:

5 ( x + 3) = 6x - 3
5x + 15 = 6x - 3
x = 18 <====== this is the number
Answer:
13.7795 inches
Step-by-step explanation: