Zena earned $30 for each of the last 3 weeks .This week she earned $42. What were her average earnings for the 4 weeks

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?

Lindsay used two points, (x,y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?

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