What is 4 2/10 - 2 8/10

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30

Marion has a bicycle that she is planning to take for a ride. the rim of the rear wheel lies 41 cm from the center of the wheel. the tire itself has a thickness of 3 cm. in order for marion to ride her bicycle 96,712 cm approximately how many rotations will the rear wheel make?