How do i find the value of this angle?

Answer this 30 points and brainliest!

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

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )