PLEASE HELP!! Quadrilateral ABCD is inscribed in circle O as shown below.

Which of the following would be used to find the m∠3?

A. 90°+m∠4

B. 180°−m∠1

C. 270°+m∠2

D. 360°−(m∠1+m∠2)

(note i put the graph in so plz )the graph shows the amount of water that remains in a barrel after it begins to leak. the variable x represents the number of days that have passed since the barrel was filled, and y represents the number of gallons of water that remain in the barrel. what is the slope of the line

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2