A store pays a 6% commission on the first $500 in sales 8% on sales over $500. Find the commission on an $800 sale.

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

How many solutions does the nonlinear system of equations graphed bellow have?

Solve x+3y=6 and 4x-6y=6 by elimination . show work !