Worth 45+ points answer all parts to question and show work

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 jamie pay at the end?

Which choice has the correct steps in graphing the solution set to the following inequality? -45_> 20x-5y

What is the value for this expression? 2e-5