Answer:

Step-by-step explanation:
Since we are given a right triangle, we can use right trigonometric ratios.
<em>x</em> is the opposite side to our angle. 10 is the adjacent side to it. Thus, we can use the tangent ratio:

Substitute:

Solve for <em>x:</em>
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Use a calculator:

The correct answer is B, $972,000 I just took the test.
Answer: C
Step-by-step explanation: x represents the number of classes, not the cost of classes.
The answer you want is k = 0.107