Present Value of a Perpetuity

What is the present value of a perpetuity of $$600$ per year if the appropriate discount rate is $7\%?$ Do not round intermediate calculations. Round your answer to the nearest cent.

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If interest rates in general were to double and the appropriate discount rate rose to $14\%,$ what would happen to the present value of the perpetuity?

When the interest rate is doubled, the PV of the perpetuity