Set 1: Trigonometry

Explanation

Answer: A

If $x = 10$ , what is the value of $2x + 13$ ?

✓ Correct

Detailed Explanation

Choice A is correct. 1. Substitute $x = 10$ $2(10) + 13$ $= 20 + 13$ $= 33$ Therefore, $2x + 13 = 33$ when $x = 10$ .

Key Steps:

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Apply the appropriate mathematical formula

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The correct answer is 33

Why others are wrong:

B: This would give an incorrect result. Choice B is incorrect and may result from a calculation error.

C: This would give an incorrect result. Choice C is incorrect and may result from a calculation error.

D: This would give an incorrect result. Choice D is incorrect and may result from a calculation error.

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