Your domain is B, all real numbers. That's an exponential growth function.The 5 just makes it a steeper graph, closer to the y axis, that's all.
Step-by-step explanation:
A=1/2(B1+B2)h is a trapezoid
A=1/2bh is a triangle
A=bh is a parallelogram
And A=Pir2 is a circle