What is the discriminant of the quadratic equation 2x + 5x2 = 1?

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 is the slope of the line shown below?

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?