Researchers are looking for other ways to treat people who have heart failure with preserved ejection fraction (HFpEF). HFpEF is a type of heart failure where the heart becomes stiff and does not relax properly. MK-2828 is a study medicine designed to treat HFpEF. The main goal of the study is to learn if MK-2828 affects what happens to rosuvastatin or furosemide in the body.