A light-year is the distance light travels in one year (at speed = 2.998 x 108,/s. (a)

Question:

A light-year is the distance light travels in one year (at speed = 2.998 x 108,/s.
(a) How many meters are there in 1.00 light-year?
(b) An astronomical unit (AU) is the average distance from the Sun to Earth. 1.50 x 108 km. How many AU are there in 1.00 light-year?
(c) What is the speed of light in AU/h?