Problem: Four students tried to write 12x + 3y=9 in equivalent y= mx + b form. Question: Did each student get an equation that is equivalent to the original Ax + By=C form?
If so, explain the reasoning for each step. If not, tell what errors the students made.

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

P= price tax is 4% added to the price. which expression shows the total price including tax?

Pleas ! its urgent! what is the value of x? enter your answer in the box. mm