Lucy and Emily are racing with each other and Lucy is 90 meters in front of Emily. The distance (in meters) that Lucy runs,
for every second t, can be given by A(t)=2t and the distance (in
meters) that Emily runs, for every second t can be given by
B(t)= 5t. How many seconds will it take for Emily to catch up
with Lucy? Give your answer to the nearest whole number.
Enter the answer

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 %