John n mary own a store and are planning a 15% off sale. for an item originally cost $20. they are arguing over which expression will represent the final cost of customer also need to pay a t% tax.

Dropping less than two inches per mile after emerging from the mountains, a river drains into the ocean. one day's discharge at its mouth, 5.6 trillion gallons, could supply all of country a's households for seven months. based on this statement, determine how much water an average household uses each month. assume that there are 100 million households in country a. country a uses approximately nothing gallons per household per month.

The length of the line segment joining the midpoints of sides ab and bc of the parallelogram abcd is 10. find the length of diagnol ac

Atown has a population of 12000 and grows at 3.5% every year. what will be the population after 7 years, to the nearest whole number?