What is the percent of change from 74 to 35 rounded to the nearest percent

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Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

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 %