The Rivera family purchased one-entry admission for two adults and multi-entry admission for two children.
The Walker family purchased multi-entry admission for one adult
and two children.

2(13)+2(15)+18+2(15)

(13+13+15+15)+(18+15+15)

(13+13)+18+(15+15+15+15)

(13+13+13)+(15+15+15)+10

33+36+10

13+13+15+15+18+15+15

Part B

What is the total cost for the two families?

Multiple choice question.

$79

$94

$104

$114

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.