The vertices of AABC are A(-2,5), B(-2.2), and C(-5,2). If AABC is reflected across the line y = 1 to produce the image AA'B'C' find the coordinates of the vertex A
The coordinates of A after a reflection across the line y = 1 are
(Type an ordered pair.)

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?