Answer:
D) -cos(x)
Step-by-step explanation:
B is the answers I think so
First, subtract the monthly fee from the October bill, which would be $52.50.
Now, divide this by $0.10.
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Hope this helps! :)
This is even function because
1)the ends are looking in one side, both are up
2)You can see that it has line symmetry y
3) for any point
f(x)=f(-x)
f(1)=-6
f(-1)=-6
To all of them ?what brainlies
