The answer is x=2. Hope this helps!!!
Answer:
Part a) 
Part b) 
Step-by-step explanation:
step 1
Find the length side BC
Applying the law of sines
we know that

we have



substitute

solve for BC


step 2
Find the measure of angle B
we know that
The sum of the interior angles in a triangle must be equal to 180 degrees
so

substitute the given values




step 3
Find the length side AC
Applying the law of sines
we know that

we have



substitute

solve for AC


Answer: 25%
Step-by-step explanation:
Given: Selling price of each hat = $12
Profit on each hat = $3
To find: The percent of the selling price of each hat is the profit.
Ratio of profit to selling price = 
The required percentage = Ratio of profit to selling price x 100

The profit is 25% of the selling price.
You plug the x value into the equation and calculate whether the result is the y given y value. If so, it is a solution and if not, it isn't. You said answer quick so I will let you do the math for yourself, but:
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Yes
No
No
Yes