help please its easy but I'm stumped I've been working for hours question in the picture

Answer:
A = 7.5 units^2
Step-by-step explanation:
The area of a triangle is
A = 1/2 bh where b is the base and h is the height
The base is 5 units and the height is 3 units
A = 1/2 (5)(3)
A = 7.5 units^2