Answer:
40 units^2
Explanation:
The parallelogram shown is basically made of two triangles divided by the x-axis. The bases go from 3 to 13 on the axis, so they have a length of 10. The height of one triangle is from a 0 to 4, which is a height of 4.
The area of a triangle is
, so plugging those numbers in gets:
= 20
Since there are two triangles it would be double the area: 40 units^2