Is 5x + 2(x - 4) = 6 an expression or an equation

Determine if the equation defines y as a function of x: 2xy = 1. yes o no

Find the vertex for the parabola given by the function ƒ(x) = −3x2 − 6x.

Anew movie is released each year for 14 years to go along with a popular book series. each movie is 2 minutes longer than the last to go along with a plot twist. the first movie is 70 minutes long. use an arithmetic series formula to determine the total length of all 14 movies