Soleil has $3,000 that she plans to invest into an account that earns 7% simple interest. Assuming she makes no additional deposits or withdrawals, how much interest will Soleil earn after 15 years?

Solve the given system of equations. 2y= -x+9 , 3x-6= -15

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm