Can you explain what the question is asking?
0= -3x+9
-9=-3x
3=x
Final answer: x=3
There is only one zero because it is linear, and can therefore only cross the x axis once.
That depends on what the digits are. It could be anywhere between zero times and infinite times. If both are the same digit and not zero, then the tenth is ten times the size of the hundredth.
She will take 
hours or 13 minutes and 38 secs.
Step-by-step explanation:
I don't know this math yet
sorry
