Buildings in spain may have several coats of arms on them. what is the history behind this tradition?

Which system of linear inequalities is represented by thegraph? x-5ys-5 and ys-2x - 4 x + 5y > 5 and y s 2x + 4 x-5y < -5 and y < -2x + 4 x + 5y > 5 and y < 2x - 4

My spanish teacher said this to me.. look at the ending on your verb. you need to make it agree with "yo" this is my sentence- sí yo estudiar español en la escuela how do i make it agree with "yo"

La piedra esceita es una pierda geande donde se encuentrqn muchos dibujos tainos desde hace muchos siglos