[Solved] A manufacturer sells instruments for per unit. The cost of producing instruments is , and no more than instruments can be produced in a week. Find the amount of instruments that should be produced in a week to obtain maximum profit. Reiss's Wheel: A theory by Ira Reiss that outlines a circular process of four stages in developing and sustaining intimate relationships, including rapport, self-revelation, mutual dependency, and personality need fulfillment. Sexual Activities: Behaviors involving sexual organs that are intended to produce erotic pleasure and/or reproductive outcomes. Bolstering: The act of supporting or strengthening something or someone. Submissive: Inclined or ready to submit or yield to the authority of another; unresistingly or humbly obedient.