Answer:
-9
Step-by-step explanation:
2(-x)² - 5 = 157
2x² - 5 = 157
add 5 to each side of the equation:
2x² = 162
divide both sides by 2:
x² = 81
√81 = 9 or -9
Answer:
15.25
Step-by-step explanation:
6y - 3x > 9
-3x > -6y + 9
x < 2y - 3....yes, it is shaded below the line