Find the polar coordinates corresponding to a point located at (- 4 .02, 11.64) in cartesian coordinates

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

(-y to the power of 2 - 4y- to the power of 2 -6 y +3)

Solve the system of equations. y=3x-1 and y=-2x+9. show work