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Aditi is participating in a walkathon fundraiser. Two anonymous donors agree to donate money according to the distance she walks. The money, $A$, in dollars, that she receives from the first donor for walking $d$ kilometers is given by the formula $A(d)=12 d$. The total money, $T$, in dollars, that she receives from both donors for walking $d$ kilometers is given by the formula $T(d)=d^{2}+20 d$.$\newline$Let $B$ be the money that Aditi receives from the second donor for walking $d$ kilometers.$\newline$Write a formula for $B(d)$ in terms of $A(d)$ and $d$$0$.$\newline$$$B(d)=$$$\newline$Write a formula for $B(d)$ in terms of $d$.$\newline$$$B(d)=\square$$