If the ordered pair (-5/2,y) lies on the graph of y=7-2x, find the value of y a) 2 b) 19/2 c) 12

Me answer number 3plz explain how you do it

The floor plan of a room has a scale of 2.5 in.: 35 ft. in the drawing, the length of the room is 8 in. and the width of the room is 6 in. what is the perimeter of the actual room?

Atriangle with all sides of equal length is a/an triangle. a. right b. scalene c. equilateral d. isosceles