7

Set 4: Trigonometry

Explanation

Answer: C

If x=2x = 2, what is the value of 6x+136x + 13?

A.

35

B.

15

C.

25

✓ Correct
D.

12

Detailed Explanation

Choice C is correct. 1. Substitute x=2x = 2 6(2)+136(2) + 13 =12+13= 12 + 13 =25= 25 Therefore, 6x+13=256x + 13 = 25 when x=2x = 2.

Key Steps:

Apply the appropriate mathematical formula

The correct answer is 25

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

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