Ok but allow my humble self to use
instead of
.
We have,

If you wanna know what the inverse is swap the values of x and y,

And now solve for y,
.
Hope this helps.
Answer:

Step-by-step explanation:
To find x, the following equation is generated given the available information:



Cross multiply


Collect like terms



3 for 3.60 the unit price come out to 1.20