260.5 is the median for the data set hope this helps;)
Step-by-step explanation:
Given:
and 
We can solve for f(x) by writing

Let 

Then


We know that f(0) = 0 so we can find the value for k:

Therefore,

Answer:
$7.30
Step-by-step explanation:
If you add .40 + .60 you'll get 1 and if you add that to the 6.30 then you'll get $7.30