Please help me ASAP in a rush

What is the lcm of 16 and 40 ? 24 and 40 ?

1) you deposit $2,500 in an account that earns 4% simple interest. how much do you earn in eight years?

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 %