If angle 4 is x+15 and angle 2 is 3x-5 what is the value of x

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

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! )

Which is the graph of the linear equation x – 2y = 6?