Can you solve #11 on p.455 in the blue book?

Read the graph carefully. If you write down the coordinates of the given points, you get ordered pairs (1, 10), (3, 30), (5, 50), etc. If you remember that your axes are *L* on the *x*-axis and *W* on the *y*-axis, then you see that those ordered pairs correspond to *L* = 10*W*.