Set 5: Trigonometry

Explanation

Answer: B

Solve for $x$ : $2(x + 7) = 30$

✓ Correct

Detailed Explanation

Choice B is correct. 1. Start: $2(x + 7) = 30$ Divide by 2: $x + 7 = 15$ Subtract 7: $x = 8$ Therefore, $x = 8$ .

Key Steps:

•

Apply the appropriate mathematical formula

•

The correct answer is 8

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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