Consider the variation of temperature and altitude depicted in the graph below' what is the dependent variable

Hi, can anyone show me how to do this problem? 100 points for this. in advance

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.

5. (03.02)if g(x) = x2 + 3, find g(4). (2 points)1619811