Finding reflected and refracted images of a candle in a glass sphere

[BookofOdd]

A fortune-teller’s crystal ball is a sphere of diameter 200 mm, made of glass
with refractive index 1.70. A candle flame of height 10 mm is placed 1.00
metre away from the surface of the ball. Calculate the position and size of the
two images of the flame:
(i) reflected in the ball’s surface, and
(ii) transmitted through the ball.

I have no idea where to start on this question

We've learned nothing like this, i'd just like some help with this as it is baffling me.

 

[vela]

Trace some rays to see where the light appears to emanate from.

http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/mirray.html
http://hyperphysics.phy-astr.gsu.edu/hbase/geoopt/raydiag.html

Your textbook probably explains the concepts in a bit more detail.