$1.$ The internal rate of return is between what two whole discount rates $($e$.$g$.,$ between $10\%$ and $11\%,$ between $11\%$ and $12\%,$ between $12\%$ and $13\%,$ between $13\%$ and $14\%,$ etc.$)?2.$ Reset the discount rate to $13\%.$ Suppose the salvage value is uncertain. How large would the salvage value have to be to result in a positive net present value?