Acircular railroad crossing sign has a diameter of 30 inches. which measurment is closest to the area of the sign in square inches

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?

Acircle has a circumference of 28.36 units what is the diameter of the circle

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9