Please help me i dont get it

How is the number of vertices for a prism related to the name of the prism

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2