How would i find angle a b c in this triangle?

Julie begins counting backwards from 1000 by 2’s and at the same time tony begins counting forward from 100 by 3’s.   if they count at the same rate, what number will they say at the same time?

What is the period of the sinusoidal function ?

It takes 6 days to put together a computer game. write an algebra equation to describe the number of days, it takes to create n computer game. how many days will it take to create 15 games? show work