Ans: C
$\begin{array}{rcl}
T(1) & = & 3 \\
T(2) & = & T(1) +2(1) +3 \\
& = & 3 +2 +3 \\
& = & 8 \\
T(3) & = & T(2) +2(2) +3 \\
& = & 8 + 4 + 3 \\
& = & 15 \\
T(4) & = & T(3) +2(3) +3 \\
& = & 15 +6 +3 \\
& = & 24 \\
T(5) & = & T(4) +2(4) +3 \\
& = & 24 +8 +3 \\
& = & 35 \\
T(6) & = & T(5) +2(5) +3 \\
& = & 35 +10 + 3 \\
& = & 48 \\
T(7) & = & T(6) +2(6) +3 \\
& = & 48 +12 +3 \\
& = & 63 \\
T(8) & = & T(7) +2(7) +3 \\
& = & 63 +14 +3 \\
& = & 80
\end{array}$
