Determine if the graph is symmetric about the x-axis, the y-axis, or the origin. r = -4 + 5 cos θ

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

Which number line represents the solution set for the inequality -1/2x> 24?

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?