Question 7Bill walks $\frac{1}{2}$ mile south, then $\frac{3}{4}$ mile east, and finally $\frac{1}{2}$ mile south. How many miles is he, in a direct line, from his starting point?$1$$1 \frac{1}{4}$$1 \frac{1}{2}$$1 \frac{3}{4}$$2$