The Linear Density of a Rod,in G/m,is Given By $\lambda = 40.0 + 30.0 x$

Multiple Choice

The linear density of a rod,in g/m,is given by $\lambda = 40.0 + 30.0 x$ .The rod extends from the origin to x = 0.400 m.What is the mass of the rod?

A) 0.213 g
B) 3.50 g
C) 3.84 g
D) 18.4 g
E) 20.8 g