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Kirti has developed formulas to help her determine the size of her rectangular flower garden each spring. If she wants to plant $n$ varieties of flowers, she determines the length, $L$, and the width, $W$, of her garden, in feet, according to the following formulas:$\newline$$$L(n)=n+2$$$\newline$$$W(n)=0.5 n+1$$$\newline$Let $A$ be the area of Kirti's flower garden if she plants $n$ types of flowers.$\newline$Write a formula for $A(n)$ in terms of $L(n)$ and $W(n)$.$\newline$$$A(n)=$$$\newline$Write a formula for $A(n)$ in terms of $n$.$\newline$$$A(n)=$$