Please help me with these 2 questions

Write an algebraic expression for the word expression the quotient of c and 8

Write an equation for the function that includes the points (1,4/5) and (2,2/3)

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?