Answer
$79$
Work Step by Step
$cd^{2}+4$
Substitute $c=3$ and $d=5$ into the equation and solve.
$=(3)(5^{2})+4$ Remember to solve follow the rules of PEMDAS and evaluate $5^{2}$ first, not $3\times5$.
$=(3)(25)+4$
$=75+4$
$=79$
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