I have included a screenshot of the entire question along with its accompanying diagram.
Answer:∠1 = 163°
Explanation:1- finding angle 2:Given that ∠2 together with 17° creates a straight angle, their total is 180°.
Thus:
180 = 17 + ∠2
Solving for ∠2 gives us:
∠2 = 180 - 17
∠2 = 163°
2- finding angle 1:Since lines a and b are parallel, ∠1 and ∠2 are alternate angles and therefore equal.
We determined that ∠2 = 163°, leading to:
∠1 = 163°
I hope this clarifies things!:)
For Chris, the calculation for his monthly telephone expense is as follows:

Where "x" denotes each minute used.
Given that Chris can afford a bill of $86, we have:

The total minutes of usage must not exceed 500 per month. Consequently, the viable choice is option C.
Answer:
Option C
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Angles known as vertical angles are those that are located across from each other at a common vertex where two lines intersect.
In the illustration, there exists only one pair of vertical angles.
These are Angle TSW and Angle ISN, both converging at the vertex labeled S.
<span>Answer is: B. Angle ISN and Angle TSW.</span>