2.) Vito uses 9 liters of water to water 20 flower pots. He is wondering how many liters of water (w) it would take to water 40 flower pots. He assumes he will use the same amount of water on each pot.
How many liters of water does it take to water 40 flower pots?

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.