Due tomorrow i beg of. plzz do 6,7,8,9 i’m am desprate

Which expression is equivalent to (9x - 3 1/ + 1 3/8)

Two cyclists 84 miles apart start riding toward each other at the samen time. one cycles 2 times as fast as the other. if they meet 4 hours later what is the speed (in miles) of the faster cyclists

What is the quotient of m^6/5 ÷ 5/m^2? assume m does not equal pl