Question

what is the value of y?
$30.3^{\circ}$

Explanation:

Step1: Identify straight angle sum

A straight angle equals $180^\circ$, so $y + 30.3^\circ = 180^\circ$.

Step2: Solve for y

Rearrange to isolate $y$:
$y = 180^\circ - 30.3^\circ$

Answer:

$149.7^\circ$