I need help with this one

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?

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry

Which graph represents the function f(x)=4[x]?