Set 1: Trigonometry

Explanation

Answer: A

If $x = 7$ , what is the value of $3x + 5$ ?

✓ Correct

Detailed Explanation

Choice A is correct. 1. Substitute $x = 7$ $3(7) + 5$ $= 21 + 5$ $= 26$ Therefore, $3x + 5 = 26$ when $x = 7$ .

Key Steps:

•

Apply the appropriate mathematical formula

•

The correct answer is 26

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.

Master all sections for your best SAT score