Images for Mathematics of investment / Altares, Priscilla S. ; Arce, Ma. Teresa B. ; Aquino, Abner A. ; CoPo, Antonio Roland I. ; Howe, Asuncion B. ; Laddaran, Angeline T. ; Mananquil, Claro T. ; Sy, Evangeline Agueda G. ; Tizon, Helen D. ; Villanueva, Antonio ; [and] Yao, Ana Marie S.D.