Which setting can be set such that 1.4 and 7/5 will both be marked as correct for a short answer question?

Allow equivalent answers" is the correct setting because it enables the system to recognize mathematically equivalent expressions as correct, even if they are formatted differently. Both 1.4 and 7/5 represent the same numerical value, so this setting ensures either input is accepted. The "Math keyboard" setting simply provides a specialized input interface; it doesn't evaluate answer equivalence. "Ignore capitalization" is irrelevant here as the question involves numerical values, not text where capitalization matters.