-7u + 10 + -1 + -3u

PLEASE HELP ME

For this case we have that the figure is composed of a triangle and a trapezoid. Then we find their areas:

Triangle:

Where:

b: It's the base

h: It is the height

According to the figure we have:

Substituting:

Trapezoid:

Where:

Base 1

Base 2

h: It is the height

According to the figure we have:

Substituting:

Finally, the total area is: