These are vertical angles, meaning they're always the same length.



The answer is 17. 30-13=17.
Basically something like this
Answer:
She has paid $110.
Step-by-step explanation:
Step 1: Find out how much she pays in ONE MONTH.
$20 service fee × 3 months= $60
Dont forget about the activation fee (this fee should ONLY be counted ONE MONTH!!)
$60/3 months + $50 activation fee = $110