The diagonal of a square is x units. what is the area of the square in terms of  x?
½x² square units
x²  square units
2x  square units
½x  square units

The heaviest 16% of all men in weight weigh more than how many pounds ?

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 does independent variable and dependent variable mean in math?