The expression shown below is the prime factorization of the what number​

What is the range of the data below? .8090100

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

What are the solutions of the system? solve by graphing. y = -x^2 -6x - 7 y = 2