Hello!
Theoretically, the actual TRIP cost $90.71, because the extra money spent was on other things other than the transportation, which is the main part of the trip.
but in total, DURING that trip, they spent $514.09
I hope this helps, and have a nice day!
Answer:

Step-by-step explanation:
Given a ΔLMN.
Line LN is extended to point O.
such that:

and

To find:

Solution:
Kindly refer to the attached image for the given triangle and dimensions of angles.
Let us recall the external angle property of a triangle:
The external angle of a triangle is equal to the sum of two opposite internal angles.
i.e.

Putting the value of
in
.

The answer is negative. You subtract 730 from 850