2x+4(2x+7)=3(2x+4) can someone please help me I need to find x

9514 1404 393

  x = -4

Step-by-step explanation:

Start by eliminating parentheses and collecting terms.

  2x +8x +28 = 6x +12 . . . . eliminate parentheses

  10x +28 = 6x +12 . . . . . . . collect terms

  4x +28 = 12 . . . . . . . . . . subtract 6x

  4x = -16 . . . . . . . . . . . .subtract 28

  x = -4 . . . . . . . . . . . divide by 4

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Check

  2(-4) +4(2(-4) +7) = 3(2(-4) +4) . . . . substitute for x

  -8 +4(-8 +7) = 3(-8 +4) . . . . evaluate products in parentheses

  -8 +4(-1) = 3(-4) . . . . . . evaluate sums in parentheses

  -8 -4 = -12 . . . . . . . . . true

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.

answer: idk

step-by-step explanation: