Set 3: Trigonometry

Explanation

Answer: B

If $8x + 1 = 121$ , what is the value of $x$ ?

✓ Correct

Detailed Explanation

Choice B is correct. 1. Start: $8x + 1 = 121$ Subtract 1: $8x = 120$ Divide by 8: $x = 15$ Therefore, $x = 15$ .

Key Steps:

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Apply the appropriate mathematical formula

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The correct answer is 15

Why others are wrong:

A: This would give an incorrect result. Choice A 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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