100,004 ÷ 10
can you give me a proper remander

Sure. 
You don't even need to bother with the division.

100,000 is a multiple of 10 .

If you add 4 more to it, that won't be enough to make another 10 .
So if somebody comes along, sees the 100,004 lying there, and
divides it by 10, the  4  will be a remainder.

Answer for 2: his profit would be $2.88 explanation: you have to first multiply 72 and 0.12 together to get $8.64 once you do that you know how much money the shopkeeper made from selling the candy bars individually. so you have to do 8.64-5.76=2.88 hope that ; )answer for 3: yeah i’m sorry i have no idea what number 3 is. i’m sorry i couldn’t with that.

You're doing something i dont know how to do but search up on google slope calculator maybe that will get you there