Can y’all help please!

On average, how many more hits will he get when he bats 100 times at home during the day as opposed to 100 times away at night?

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?

What is r i 4.5+10r=-6.5 with work pls