#### Answer

See plot.
a. $(3.5,\frac{5\pi}{2})$
b. $(-3.5,\frac{3\pi}{2})$
c. $(3.5,-\frac{3\pi}{2})$

#### Work Step by Step

We can plot the point by moving to angle $\theta=\frac{\pi}{2}$ counterclockwise, and then to $r=3.5$ as shown in the figure.
a. We can find another representation for the same point using the given range as $(3.5,\frac{5\pi}{2})$
b. We can find another representation for the same point using the given range as $(-3.5,\frac{3\pi}{2})$
c. We can find another representation for the same point using the given range as $(3.5,-\frac{3\pi}{2})$