Answer:
-3
Step-by-step explanation:
Just subtract it like it was the other way around then add a minus (-)
The unit rate is $1.25 per pound
I could answer this if you could tell me the value of one of the letters
Answer:

Step-by-step explanation:
To find the inverse function, switch the y and x
becomes
.
Now, rearrange so that the equation is equal to y.

Hope this helps!