F(x) = x4 + 3x3 – x² – 8x + 2 what is the local maximum and the local minimums? when is the function increasing and decreasing?

How do you solving the solution of each system using elimination?

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.

Ming says that 0.24 > 1/4 because 0.24= 2/4. which best explains mings error