25% of what number is 15. can u explain how you solved it. : )

The parabola opens: y=√x-4 (principal square root) up down right left

Two poles, ab and ed, are fixed to the ground with the of ropes ac and ec, as shown: what is the approximate distance, in feet, between the two poles? 6.93 feet 8.66 feet 12.32 feet 15.59 feet

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