Tiana has a wallet with different denominations of bills in it. She randomly chooses a few bills and counts them. There are 2 ones, 1 five, 3 tens, and 1 twenty. If there are 28 bills in her wallet, what would you predict is the approximate value of all the bills?

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.