Predicted X-ray luminosity from unresolved LMXBs, divided by the absorption-corrected X-ray luminosity of the power-law component, plotted against SFR. The top panel shows the results assuming only Galactic absorption, while the bottom panel includes a correction for absorption internal to the target galaxy. The red line shows the expected result if all of the observed power-law flux is due to LMXBs. The red circles mark the AGNs. See the text of the paper for more details.