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2

Set 2: Linear Functions (Advanced)

Explanation

Answer: A

PROBLEM

If f(x) = 5x - 10 and g(x) = 2x + 3, find x when f(x) = g(x).

If f(x) = 5x - 10 and g(x) = 2x + 3, find x when f(x) = g(x).

A.

4.33

✓ Correct
B.

4

C.

3

D.

5

Detailed Explanation

Choice A is the best answer. 5x - 10 = 2x + 3. 3x = 13, x = 4.33

Why others are wrong:
B: 4 is incorrect because it does not satisfy the equation.
C: 3 is incorrect because it does not satisfy the equation.
D: 5 is incorrect because it does not satisfy the equation.
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