John left school with 8.43 he found a quarter on his way home and then stopped to buy an Apple for 0.89 . how much money did he have when he got home

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?

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year

What percent of 18 is 24? and plz explain thx.