help me solve 2 multiple choice thanks

Which of the following will not result in an increase in return on investment (ROI), assuming other factors remain the same? An increase in operating assets. An increase in sales. An increase in net operating income A reduction in expenses Which of the following segment performance measures will decrease if there is an increase in the interest expense for that segment? Return on Investment - Yes; Residual Income - No Return on Investment - No; Residual Income - Yes Return on Investment - Yes; Residual Income - Yes Return on Investment - No; Residual Income - No