#### Answer

$y=480$

#### Work Step by Step

$\frac{y}{10}=(-8)^2-|20|+(-2)^2\rightarrow$ simplify
$\frac{y}{10}=64-20+4\rightarrow$ simplify
$\frac{y}{10}=48\rightarrow$ multiply both sides by 10
$\frac{y}{10}\times10=48\times10\rightarrow$ simplify
$y=480$