Write an expression for the calculation 84 divided into seveths added to 9 divided into thirds

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

Can someone me out here number 4 plz

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab