Good afternoon! Please help me understand these problem in my reviewer. I have upcoming exam next week. If its okay to give me solutions that would be great! Thank you and keep safe.

1.

The total stopping distance T of a vehicle is shown below, where T is in feet and x is the speed in miles per hour. T: 2.5x + 0.5x2 Approximate the change and percent change in total stopping distance as speed changes from x = 35 to x = 38 miles per hour. (Round your answers to one decimal place.) is T \"/0 \fFind the differential dy of the given function. (Use "dx" for dx.) y = 9x2/3 dy =The thickness of the shell is a = 0.7 centimeter. Use differentials to approximate the volume of the shell. 0' cm \fUse differentials to approximate the value of the expression. Compare your answer with that of a calculator. (Round your answers to four decimal places.) 2/ 25 using differentials: using a calculator: