Eis the midpoint of df, de= 2x+4 and ef = 3x-1 find de, ef, df

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?

How many solutions does the nonlinear system of equations graphed below have? a. one b. zero c. four d. two

When is g(x) = 0 for the function g(x) = 5.23x + 4?