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Consider the following market for capital. The quantity of capital supplied as a function of an interest rate, r, is given by the equation qS = 9 + 180r. The quantity of capital demanded is given by the equation qD = 30 - 120r. If an usury law were implemented to cap the market interest rate, which of the following maximum interest rates would actually have "bite"? That is, for which of the following possible interest rates does the market rate actually change after the usury law is imposed? Check all answers which apply. 2% 6% 8%