Without finding the product determine whether each product will be rational or irrational

Bradley hikes 12 miles in 3 hours. in relation to bradley’s hike, which statement describes the expression

F(x)=5/6x+3 which of the following is true

From the top of a tree a bird looks down on a field mouse at an angle of depression of 50°. if the field mouse is 40 meters from the base of the tree, find the vertical distance from the ground to the bird's eyes.