3

Harold bought 18 toys for his nieces and nephews. The least expensive toy cost $7.12, and the most expensive toy cost $10.88. Which is the best estimate for the total amount Harold spent on the toys he bought for his nieces and nephews?

A.

$201.00

B.

$270.00

C.

$124.00

D.

$162.00

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.