which equation can be used to find the value of x?\n168 = 18·x + 12·2x\n168 = 18·12 + 2x·x\n168 = 18·x +…

Explanation:

Step1: Analyze the figure

The figure can be divided into two rectangles. One rectangle has dimensions (x) and (18), and the other has dimensions (2x) and (12).

Step2: Use the area formula

The area of a rectangle is (A = length\times width). The total area of the figure is (168). So the area of the first rectangle is (18\times x) and the area of the second rectangle is (12\times2x). Then the equation for the total area is (168=18\cdot x + 12\cdot2x).

Answer:

(168 = 18\cdot x+12\cdot2x) (the first option)