Asalesman must commute 1 hour and 48 minutes from his house to the airport, fly to another city and take a bus to his destination. what is the total travel time one way? distance between 2 airports = 1,980 miles. average speed of airplane = 550 mph. travel time by bus after arrival at airport = 30 minutes.

Time spent on the airplane:

Time = Distance ÷ speed = 1980/550 = 3.6 hours = 3 h 36 mins

Total time needed = 1 h 48 mins + 3 h 36 mins + 30 mins = 4 h 114 mins

4 h 114 min = 5h 54 mins

Total travel time = 5h 54 mins

it's d.

step-by-step explanation:

because: -1(4x + 1y) +2 (1x-3y) distribute each number into the parenthesis.

then you would get: -4x - 1y + 2x -6y combine like terms

and get: 2x -7y

hope my answer has you if not then i'm sorry.

i belive those are the ones that are under 90 degreese.