And if we can't assume that, then what are we even doing
That's exactly what the other user is saying. We can't assume straight lines because the given angles don't make any sense and thus this graph is literally impossible to make. We're arguing over literal click bait is what we're doing.
I'm in the US and the local blood centers near me give $20 gift cards for whole blood ($40 for platelets and "automation" whatever the fuck that means (that might be the whole blood donation idk (if that's the case then I don't know what specific donation the $20 is for exactly))). No idea about plasma though.
That's exactly what the other user is saying. We can't assume straight lines because the given angles don't make any sense and thus this graph is literally impossible to make. We're arguing over literal click bait is what we're doing.