Exam Maths Puzzle Algebra

What is the vertex and X-intercepts of the parabola -14x^2+36-30=0 , and how do you know?

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Exam Other Question

roberta works in her garden every day. she spends 70% of that time weeding her flower beds. if it takes her 11/4 hours to weed the flower beds, about how much time does she spend watering the flowers? A hiking club set out at 12 noon. The members hiked along a level road at a rate of 4 mph; up a mountain trail at 3 mph;immediately back down the mountain trail at 6 mph,and back home along the level road again at 4 mph. They got back at 6pm. How far did the club hike?