For any triangle, the three angles must add up to 180 degrees. So if you have two of the angles and want to find the third, make an equation, designating the unknown angle, x, to find the sum. It should look like this:

. Now isolate the x-variable and you find the third angle to be 41 degrees
Answer: 14
<u>Step-by-step explanation:</u>
Step 1: Graph both equations to find the vertices (see attached):
- The graph shows vertices at: (0, 0), (3, 0), (0, 5) and (2, 3)
Step 2: Input the coordinates of the vertices into the given function (c = 4x + 2y):
- (0, 0): 4(0) + 2(0) = 0
- (3, 0): 4(3) + 2(0) = 12
- (0, 5): 4(0) + 2(5) = 10
- (2, 3): 4(2) + 2(3) = 14
Step 3: Evaluate the value from Step 2 to find the maximum (largest).
- the largest value between {0, 12, 10, 14} is 14