## Algebra: A Combined Approach (4th Edition)

$\frac{37}{84}$
Evaluate each expression when x = 12 and y = 8: $\frac{y^{2}+x}{x^{2}+3y}$ $\frac{8^{2}+12}{12^{2}+3(8)}$ $\frac{64+12}{144+3(8)}$ $\frac{64+12}{144+24}$ $\frac{76}{168}$ = $\frac{37}{84}$