What would be the first step in when solving the following linear system by substitution? x = 4 + y
x - 2y = 10

Which statements are true? see picture

Select the number of ways in which a line and a circle can intersect

Larry wants to buy some carpeting for his living room. the length of the room is 4 times the width and the total area of the room is 16 square meters. what is the length of the living room