Which sequences are arithmetic? 5, 1, -3, -7

2, 4, 8, 16

12, 15, 18, 21

0, 10, 100, 1000

If g(x) = x+1/ x-2 and h (x) =4 - x , what is the value of ( g*h) (-3)?

Simplify. 3(4+4x) (type your answer in with no spaces)

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.