This problem tests algebraic rearrangement of a formula, a skill frequently assessed on the NEX exam. The goal is to isolate the variable. Starting with the equation, notice thatis multiplied by. To solve for, divide both sides of the equation by. Doing so cancelson the right side, leavingalone. The resulting equation is. This corresponds to option B. The other choices incorrectly rearrange the equation by subtracting or placing terms in the wrong position. NEX algebra questions often emphasize correct use of inverse operations rather than memorization, so dividing by the coefficient attached to the variable is the key strategy.
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