Let r>0 -π<θ<π be real. Calculate all the values of

where .

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

Which of the following represents the factorization of the trinomial below? x^2+7x-30