Set 5: Trigonometry

Explanation

Answer: D

If $x = 8$ , what is the value of $5x + 11$ ?

✓ Correct

Detailed Explanation

Choice D is correct. 1. Substitute $x = 8$ $5(8) + 11$ $= 40 + 11$ $= 51$ Therefore, $5x + 11 = 51$ when $x = 8$ .

Key Steps:

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Apply the appropriate mathematical formula

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The correct answer is 51

Why others are wrong:

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

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.

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