Set 4: Trigonometry

Explanation

Answer: D

If $x = 10$ , what is the value of $5x + 8$ ?

✓ Correct

Detailed Explanation

Choice D is correct. 1. Substitute $x = 10$ $5(10) + 8$ $= 50 + 8$ $= 58$ Therefore, $5x + 8 = 58$ when $x = 10$ .

Key Steps:

•

Apply the appropriate mathematical formula

•

The correct answer is 58

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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