Question

Did I get this right? And please explain why or why not please

Answer 1

$\bf 7x^2-10\implies 7(\stackrel{x}{6})^2-10\implies 7(36)-10\implies 252-10\implies 242 \\\\\\ 43\ \textless \ y-30\implies 43+30\ \textless \ y\implies 73\ \textless \ y\qquad y= \begin{cases} 74\\ 75\\ 76\\ 77\\ ...+\infty \end{cases}$