Stretch y=5x vertically about the fixed x-axis by a factor of 2.

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?

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect

Solve the equation: x - 9 = -6 + 5 a. 21 b. 7 c. 14 d. 2