I need help with 7. Please I beg you due in 10mins

7x+8y=-18, 4x-9y=-3 solve the system of equations

2x minus y equals 6, x plus y equals negative 3

Anew landowner is interested in constructing a fence around the perimeter of her property. her property is 1,080√30 feet wide and 500√20 feet long. what is the perimeter of the property? (recall that the perimeter is the sum of each side of a shape or boundary). a 1,580√40 feet b. 5,320√5 feet c. 3,160√20 feet d. 10,640√5 feet