$($Related to Checkpoint $9\mathrm{.}6)($Inflation and interest rates$)$ What would you expect the nominal rate of interest to be if the real rate is $4\mathrm{.}2$ percent and the expected inflation rate is

$7\mathrm{.}4$ percent?

The nominal rate of interest would be $\%.($Round to two decimal places.$)$

I keep getting $11\mathrm{.}6\%$ but it's not correct