If r cannot equal 0, which of the following polar coordinate pairs represents the same point as the point with polar coordinates (r, theta) select all that apply (2 correct answers)
a. (-r, theta - 2π)
b. (-r, theta + 3π)
c. (r, theta + 2π)
d. (r, theta - π)

Question 1(multiple choice worth 1 points)(07.06 mc)a group of students must collect at least $150 to organize a science fair. they have already collected $30. which graph best represents all remaining amounts of money, in dollars, that thestudents should still collect to organize the science fair? -210 -180 -150 - 120 -90-60 -300306090 120 150 180 210-210 -180 -150 - 120 -90 -60 -30 0 30 60 90 120 150 180 210-210 -180-150 - 120 -90-60-300 30 60 90 120 150 180 210-210 -180 -150 - 120.90 -60 -30 0 30 60 90 120 150 180 210

Can someone me with these two circle theorem questions asap?

Which is the focus of a parabola with equation y2=4x