Calculate median of 5, 10, 12, 4,6,11,13,5?

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

The length of a shadow of the building is 36m. the length of the pole, which is perpendicular to the ground, is 1.9m. the length of the pole's shadow is 1.52m. what is the height of the building?

The graph shows the distance kerri drives on a trip. what is kerri's speed?