Answer: 8.0
8.035714286 is rounded to 8
Answer:

Step-by-step explanation:
Given
See attachment
Required
Determine f(0)
To solve for f(0), we make use of:

Because:
is true for 
So, we have:




If you have to unknown variables, you have to eliminate one, e.g. Like this:
2×(2y-10)+3y=1240. Now there is only one unknown variable
4y-20+3y=1240
7y-20=1240
7y=1260
y=1260/7=180
Now you can calculate x
x=2y-10=2×180-10=360-10=350. ( You can also use the other equation but This one is easier)
Answer:

Step-by-step explanation:







Yes there are. Its just the way they work out!