Practice problem
Solve the following system using substitution: {y=x2+7x+100y+10x=30\begin{cases} y=x^2+7x+100 \\y+10x=30\end{cases}{y=x2+7x+100y+10x=30
(−10,130)(-10, 130)(−10,130)
(−10,70)(-10, 70)(−10,70)
(−10,−70)(-10, -70)(−10,−70)
(30,−40)(30, -40)(30,−40)
(−7,100)(-7, 100)(−7,100)
(−7,−40)(-7, -40)(−7,−40)
Type a concept, like “slope” or “photosynthesis”.
