What is the sum of 3/x^2-9+(5/x+3)

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

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)

Which of the following vectors are orthogonal to (2,1)? check all that apply