So basically i am stupid and need help figuring out how to do angles in inscribed quadrilaterals... if anyone could help me that would be great considering i am failing geometry currently :'')

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?

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

Two airplanes start at the same place and travel in opposite directions,one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?