Which statements about this word problem are true? Check
all that apply.

If you have a line given by  

f(x) = mx + b

m is the slope. If the slope is positive, the graph increases from left to right. If the slope is negative, the graph decreases from left to right.

x is the INPUT and f(x) is the OUTPUT. f(x) is a rule that tells you what to do with x. When you put x in, and do what f(x) tells you to do to it, f(x) is what you get out.  

Slope can be found by taking (y2 - y1)/(x2 - x1).

If m = 0, f(x) becomes f(x) = b. The term with the x drops out because it's zero no matter what x you plug into it.  

f(x) = b is a HORIZONTAL line. It says that the y coordinate is b, no matter what x I plug in.

Step-by-step explanation:

simplifying

5(x + -6) = 2(x + 3)

reorder the terms:

5(-6 + x) = 2(x + 3)

(-6 * 5 + x * 5) = 2(x + 3)

(-30 + 5x) = 2(x + 3)

reorder the terms:

-30 + 5x = 2(3 + x)

-30 + 5x = (3 * 2 + x * 2)

-30 + 5x = (6 + 2x)

solving

-30 + 5x = 6 + 2x

solving for variable 'x'.

move all terms containing x to the left, all other terms to the right.

add '-2x' to each side of the equation.

-30 + 5x + -2x = 6 + 2x + -2x

combine like terms: 5x + -2x = 3x

-30 + 3x = 6 + 2x + -2x

combine like terms: 2x + -2x = 0

-30 + 3x = 6 + 0

-30 + 3x = 6

add '30' to each side of the equation.

-30 + 30 + 3x = 6 + 30

combine like terms: -30 + 30 = 0

0 + 3x = 6 + 30

3x = 6 + 30

combine like terms: 6 + 30 = 36

3x = 36

divide each side by '3'.

x = 12

simplifying

x = 12

this should .

i think the length is 12 and the width is 17