At the beginning of the year, jason had $80 his savings account. each month, he added $15 to his account. write an expression for the amount of money in jason's savings account each month. then use the expression to find the amount of money in his account at the end of the year.

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 %