PLSSS HELP & pls dont write something random to get points

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?

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?

Find the value of x. round the length to the nearest tenth