Which graph represents points on the polar curve r = –4sin(3θ)?

How do you use the elimination method for this question? explain, because i really want to understand!

Consider the following equation. 1/2x^3+x-7=-3sqrtx-1 approximate the solution to the equation using three iterations of successive approximation. use the graph below as a starting point. a. b. c. d.

The tile along the edge of a triangular community pool needs to be replaced? ?