A city has an elevation of -752 feet. Which statement describes the city's elevation? O-752 above sea level
O-752 below sea level
O 752 above sea level
O 752 below sea level

Anyone know? is appreciated! will mark brainliest if correct!

What is the upper quartile in the box plot?

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.