The sum of three numbers is 66. The second number is twice the first six less than the third. Find the numbers

Which graph represents the solution set for the given system of inequalities? x+2y< 3 x+y> 4 3x-2y> 4

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

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?