Please help me with my homework it’s attached
Thanks,

The answer for the first question is attached with a picture!

For the second question, the answer is yes, more than half of the seats on the plane are being used.

Step-by-step explanation:

first class section has  14 Seats

Seat used = (5/7) * 14 = 10 Seats

Business class Section has 64 Seats

Seats used = (5/16) * 64 = 20 Seats

Economy class Section has 4 * 108 = 432 Seats

Seats used = (5/9) * 432 = 240 Seats

Total Seats = 14 + 64 + 432 = 510

Total Seats Used = 10 + 20 + 240 = 270

270/510  = 270 ( 2 * 255)   >  1/2

-4

step-by-step explanation:

(-4+8)=-(4-8)=-8+4=-4

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