17 and 18 with work. getting confused

Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180

An internet company charges $8.95 per month for the first 3 months that it hosts your web site. then the company charges $11.95 per month for web hosting. how much money, in dollars, will the company charge for 8 months of web hosting?

Which word in the sentence below is an interrogative pronoun? who is picking us up from school? whousisfrom