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Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

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.

Describe a situation where it would be beneficial to round decimals to the nearest dollar. explain why you would use rounding in that situation.