19 increased by three times a number is for less than four times the number find the number

In which of the situations can information about tyler be represented by the expression r+3 when r represents information about ray? check all that apply.

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?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?