Evaluate f(a+4)
pls help me w this !

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.

⦁plzzz me asap worth 30 points. part b: find the area of just the wood portion of the frame. this is called a composite figure. explain and show your work.

Find the x-intercepts for the parabola defined by this equation: y=-3x^2-6x+9