Find an expression which represents the sum of (8x+10y) and (-4x-3y) in simplest form

Which point is a solution to the inequality shown in this graph (-3,-3)(3,-1)

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take

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.