Darron uses a family recipe to make hamburgers. if he plans on using 1 1/3 cups of bread crumbs, about how many pounds of hamburger does darron need to use to keep the relationship between bread crumbs and hamburger proportional?
a. 5 1/3 pounds,
b. 5 pounds,
c. 4 1/3 pounds,
d. 4 pounds

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.