GUYS PLS HELP!!
all i need to know is what x is please

Option C

Step-by-step explanation:

Area of the composite figure = Sum of the areas of three rectangles given

                                                = (3x)(x) + 4x + 3(3x)

                                                = 3x² + 4x + 9x

                                                = 3x² + 13x

Since, area of the figure = 82

Therefore, expression representing area of the figure is,

3x² + 13x = 82

Option (C) will be the answer.

Here, x is a variable.

And we can get the value of x by using quadratic formula.

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.