What is 805,040 in expanded form using the power of ten

Water flows at a steady rate from a tap. its takes 40 seconds to fill a 4 litre watering can from the tap. the rate at which water flows from the tap is halved. complete: 4 litres into cm3

Pranza plotted point a in the coordinate plane below.

During a wright loss challenge your friend goes from 125 pounds to 100 pounds.what was the percent weight loss