Answer:
Area decreases by 16%
Step-by-step explanation:
Use formula for the area of the triangle

<u>Initial triangle:</u>
The base is 18 cm
The height is 5 cm
The area is

<u>New triangle:</u>
The base is 
The height is 
The area is

Area decreases by

Divide everything by the "X" thing AND MOVE IT TO OPPOSITE SIDE
The answer to your question is 4x-12
<span>y = 3x - 7
3 = slope
-7 = y intercept
This line would cross the y intercept at -7, and go up by 3 (slope). </span>
The answer to what you have there is -55 using order of operations. 5 times -6 is -30. 5 times -5 is -25. add. You get -55.