y = 192(.25) + .25x
75 = 192(.25) + .25x
27 = .25x
x = 108
jenny has been saving quarters in a piggy bank since she was born. she currently has 192 quarters in her piggy bank. she wants to save $75 to buy a new ipod, so she decides to add 2 quarters every day.
she sets up and solves the equation shown. what does her solution mean?

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 %