This is really simple for your average person but not me.
Basically I have a dataset involving production of x amount of units and y total costs.
I want to be able to draw a graph, produce an equation and plot the line of best fit on the graph.
How do I find the equation for y on x?
As you can tell this will produce a curvilinear graph, and from what I've determined from using a calculator, A = 18.087, B=4.66, C=1.200, although it obviously doesn't because the equation won't work.