The first expression could be written as 3x + 12 and the second could be written as 2x + 6.
In order to find these, count the number of x's you see in each question. Then use that number as the coefficient to x in your statement. The first problem has 3 and the second has 2.
Then add the numbers of 1's together to get the constants at the end of the expressions. The first has 12 and the second has 6.
The answer is d=6t ok because if you multiply 12 by 6 you get 72 as this shows their relationship
ANSWER
EXPLANATION
The sum of the interior angles of a triangle is 180°
We can rewrite this as:
The sum of interior angles of a quadrilateral is 360°
We can also rewrite this as:
In general an n-sided polygon has
the sum of the interior angles given by the formula:
