What are the solutions to the equation?
x2 + 6x = 40

O x=-10 and x = 4
O x= -8 and x = 5
O x= -5 and x = 8
O x= -4 and x = 10

The scale factor of the dimensions of two similar wood floors is 5 : 4. it costs $384 to refinish the smaller wood floor. at that rate, how much would it cost to refinish the larger wood floor?