Jim has found a store that is unique. all the shirts sell for a set price and all the
pants are also priced the same in the entire store! jim has purchased 3 shirts and 2
pants for $104.81 and his friend has purchased 2 shirts and one pant for $61.33.
set up and solve a system of linear equations. how much is one shirt?
a) $43.48
b) $17.85
d) $51.26
d) $25.63

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.