Determine the domain of the function. f(x) = sqrt 9 - x x ≤ 9 all real numbers except 9 all real numbers x > 9

Will mark brainliest question in the pic.

The function y= x - 4x+ 5 approximates the height, y, of a bird, and its horizontal distance, x, as it flies from one fence post to another. all distances are in feet. complete the square to find and interpret the extreme value (vertex). select two answers: one extreme value and one interpretation.

Zahra runs a 500-meter race at a constant speed. which graph shows her distance from the finish line during the race?