Answer:
-5x+173
Step-by-step explanation:
x+4x+7 (sum of the 2 angles that you know)
5x+7
180-5x+7
the answer is b because I know I just did that
18 Minutes
27 Minutes ÷ 9 Trucks = 3 Min per Truck
Therefore...
3 Minutes × 6 Trucks = 18 Min to load 6 Trucks