The model shows the addition expression 18 + 12. (A model containing 3 rows of 6 orange squares and 3 rows of 4 blue squares)

One expression that is equivalent to this sum is . 1. 3 + 6 + 4 2. 3(6 + 4) 3. 3 + 6(4) 4. 3(6) + 4

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step-by-step explanation:

b is the correct answer

since we know that the two functions are equal, f (x) = g

(x), therefore when we equate the two equations the result should be similar to

3x = x – 4:

a. f(x) = 3x, g(x) = x – 4

equating the two functions:

3x = x – 4             (correct)

so we now got our answer (a)