Which phrase correctly represents the algebraic expression for 22 – n? A. A number decreased by twenty-two. B. The total of twenty two and a number. C. The difference of two and a number. D. Twenty-two decreased by a number.

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