Write inequalities to represent the situations below. \( \begin{array}{l}\text { The vehicle's fuel efficiency is no less than } \mathbf{3 0} \text { miles per gallon. } \\ \text { Use } \mathbf{f} \text { to represent the vehicle's fuel efficiency (in miles per gallon). } \\ \square \\ \text { To get the } \mathbf{1 0 \%} \text { discount, a shopper must spend more than } \$ \mathbf{1 0 0} \text {. } \\ \text { Use } \mathbf{d} \text { to represent the spending (in dollars) of a shopper who gets the discount. } \\ \square\end{array} \)