The correct answer is:
A) 5x + 15
Explanation:
5x is the area of the green square (5•x)
15 is the area of the orange rectangle (5 •3 =15)
To have the total area you have to sum the areas of the two figures: 5x + 15
They are using two different functions.
Tell your math teacher that questions like these are loaded and should not be given as assignments.
If four coordinates are given then:-
- Find length of the sides using distance formula

- Now break down into two triangles .
- Use herons formula and find areas of the triangles .add them and get the area