Metric conversions are simply accomplished by multiplying or dividing by what

Converting metric quantities to measurements in other
systems of units is not simply accomplished. 

But converting units within the metric system always means
multiplying the original quantity by a power of 10 ... a positive
power to convert to a smaller unit, or a negative power to convert
to a larger unit.  

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.