According to above figure, the angles (8x - 20)° and (5x + 37)° are pairs of vertical opposite angles, so
The answer is 2 and over it is 3
Answer:
Please see the attached images for explanation:
Step-by-step explanation:
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Your answer is attached to the pic
Given , revenue function : 
Cost function 
Profit = Revenue - Cost
Hence, P = R(x) - C(x)
Total revenue for x = 12000 is 
Total cost for x = 12000, 
Profit = 60000-28500 = 31500
Answer = 31500