Erin is going to paint a wall in her house. She needs to find the area of the wall so she knows how much paint to purchase. What is the area of her wall? House dimensions: 12ft high to middle of ceiling. Wall 7 ft on lowest part x 15 ft wide.

Step-by-step explanation:

The figure is attached (which is based on the description given)

Notice that you can divide it into two figures: a rectangle and a triangle.

The area of a rectangle can be found with this formula:

Where "l" is the length and "w" is the width.

In this case:

Therefore, the area of the rectangle is:

The area of a triangle  can be calculated with the following formula:

Where "b" is the base and "h" is the height.

In this case, you can identify that:

Therefore, substituting values and evaluating, you get:

Finally, you must add the areas calculated above, in order to find the area of the wall. This is:

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1

i think it is 18

step-by-step explanation: