A system of equations has infinitely many solutions. If 2y – 4x = 6 is one of the equations, which could be the other equation? y = 2x + 6
y = 4x + 6
–y = –2x – 3
–y = –4x + 6

Which expressions are equivalent to -6 + 3m

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

Astore sells two types of radios. one type sells $87 and the other for $119. if 25 were sold and the sales were $2495, how many of the $87 radios were sold a) 5 b) 20 c) 15 d)10