Anyone know the answers to these questions? if so answer them and show work, correct answers will receive brainliest

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

Jamie went to home depot.she bought 25 bags of soil that cost $9 per bag.she bought 15 pots at $8 each,and she bought 23 bags of pebbles at $15 each.she used a coupon that gave her $5 off for every 100 dollars she spent.how much did jame pay at the end?

15/16 as a decimal rounded to the nearest hundredth