Based on the sequence -13, -8, -3, 2, 7, 12 what will be the 500th term?

Which expression gives the area of the triangle shown below

Do you mind if you guys me with this question i’m on number 8

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.