Joe ran 3 miles yesterday and wants to run at least 12 miles this week. write an inequality that can be used to determine the additional number of days joe must run this week if each run is 3 miles. then, solve the inequality. ( , i'm struggling! )

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 %