Set 3: Trigonometry

Explanation

Answer: A

If $x = 4$ , what is the value of $5x + 10$ ?

✓ Correct

Detailed Explanation

Choice A is correct. 1. Substitute $x = 4$ $5(4) + 10$ $= 20 + 10$ $= 30$ Therefore, $5x + 10 = 30$ when $x = 4$ .

Key Steps:

•

Apply the appropriate mathematical formula

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The correct answer is 30

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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