Which best proves why the expressions 4 (x + 3) + 2 x and 6 (x + 2) must be equivalent expressions? When x = 3, both expressions have a value of 30. When x = 5, both expressions have a value of 42.

The answer is choice first which is "When x = 3, both expressions have a value of 30".

Step-by-step explanation:

Given:

First expression:

Second expression:

Through the question when we substitute x=3 into its first equation so we get:

The value will be substituted by x=3 into its second expression:

So, it will prove that both the two expressions are equivalent.

y=mx+b is the final answer!   : )

y=mx+b

step-by-step explanation:

m slope, b y-intercept