If you have $2000 and you made an investment that cost $400 and it gives back 1000 how much

Which of the following answers is 7/9 simplified? 7/9 2/9 11/9 2/7

Part a: sam rented a boat at $225 for 2 days. if he rents the same boat for 5 days, he has to pay a total rent of $480. write an equation in the standard form to represent the total rent (y) that sam has to pay for renting the boat for x days. (4 points)

If rt is greater than ba, which statement must be true ?