Multiply x to the 1 third power times x to the 3 sevenths power

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2

You are saving to buy a bicycle; so far you save 55.00. the bicycle costs 199.00. you earn 9.00 per hour at your job. which inequality represents the possible number of h hours you need to work to buy the bicycle?