HELP PLEASE ASAP What is the product of any integer and -1?​

Need this asap if anyone can i would be very grateful. if you could show workings that would really

What is the difference between the equations of a vertical and a horizontal line?

The edge of a cube was found to be 30 cm with a possible error in measurement of 0.4 cm. use differentials to estimate the maximum possible error, relative error, and percentage error in computing the volume of the cube and the surface area of the cube. (round your answers to four decimal places.) (a) the volume of the cube maximum possible error cm3 relative error percentage error % (b) the surface area of the cube maximum possible error cm2 relative error percentage error %